The United States declared war on Germany on April 6, 1917, during World War I. The U.S. was an independent power and did not officially join the Allies. It closely cooperated with the Allies militarily but acted alone in diplomacy. The U.S. made its major contributions in terms of supplies, raw material and money, starting in 1917. American soldiers under GeneralJohn Pershing, Commander-in-Chief (C-in-C) of the American Expeditionary Force (AEF), arrived in large numbers on the Western Front in the summer of 1918. Before entering the war, the U.S. had remained neutral, though it had been an important supplier to Great Britain and the other Allied powers. During the war the U.S. mobilized over 4 million military personnel and suffered 110,000 deaths, including around 45,000 who died due to the 1918 Spanish Flu outbreak (30,000 before they even reached France). The war saw a dramatic expansion of the United States government in an effort to harness the war effort and a significant increase in the size of the U.S. Armed Forces. After a relatively slow start in mobilizing the economy and labor force, by spring 1918, the nation was poised to play a role in the conflict. Under the leadership of PresidentWoodrow Wilson, the war represented the climax of the Progressive Era as it sought to bring reform and democracy to the world, although there was substantial public opposition to U.S. entry into the war.
Main article: American entry into World War I
The American entry into World War I came in April 1917, after more than two and a half years of efforts by PresidentWoodrow Wilson to keep the United States out of the war. Apart from an Anglophile element urging early support for the British, American public opinion reflected that of the president: the sentiment for neutrality was particularly strong among Irish Americans, German Americans and Scandinavian Americans, as well as among church leaders and among women in general. On the other hand, even before World War I had broken out, American opinion had been more negative toward Germany than towards any other country in Europe. Over time, especially after reports of atrocities in Belgium in 1914 and following the sinking of the passenger liner RMS Lusitania in 1915, the American people increasingly came to see Germany as the aggressor in Europe.
As U.S. President, it was Wilson who made the key policy decisions over foreign affairs: while the country was at peace, the domestic economy ran on a laissez-faire basis, with American banks making huge loans to Britain and France — funds that were in large part used to buy munitions, raw materials and food from across the Atlantic. Until 1917, Wilson made minimal preparations for a land war and kept the United States Army on a small peacetime footing, despite increasing demands for enhanced preparedness. He did however expand the United States Navy.
In 1917, with Russia experiencing political upheaval following widespread disillusionment there over the war, and with Britain and France low on credit, Germany appeared to have the upper hand in Europe, while the Ottoman Empireclung to its possessions in the Middle East. In the same year, Germany decided to resume unrestricted submarine warfare against any vessel approaching British waters; this attempt to starve Britain into surrender was balanced against the knowledge that it would almost certainly bring the United States into the war. Germany also made a secret offer to help Mexico regain territories lost in the Mexican–American War in an encoded telegram known as the Zimmermann Telegram, which was intercepted by British Intelligence. Publication of that communique outraged Americans just as German U-boats started sinking American merchant ships in the North Atlantic. Wilson then asked Congress for "a war to end all wars" that would "make the world safe for democracy", and Congress voted to declare war on Germany on April 6, 1917. On December 7, 1917, the U.S. declared war on Austria-Hungary. U.S. troops began arriving on the Western Front in large numbers in 1918.
After the war began in 1914, the United States proclaimed a policy of neutrality despite president Woodrow Wilson's antipathies against Germany. Early in the war, the United States started to favor the British and their allies. President Wilson aimed to broker a peace and sent his top aide, Colonel House, on repeated missions to the two sides, but each remained so confident of victory that they ignored peace proposals.
When the German U-boatU-20 sank the British liner Lusitania on 7 May 1915 with 128 US citizens aboard, Wilson said "America is too proud to fight" and demanded an end to attacks on passenger ships. Germany complied. Wilson repeatedly warned that the US would not tolerate unrestricted submarine warfare in violation of international law and of human rights. Wilson came under pressure from war hawks led by former president Theodore Roosevelt, who denounced German acts as "piracy", and from British delegations under Cecil Spring Rice and Sir Edward Grey. Wilson realized he needed to enter the war in order to shape the peace; indeed in 1919 he was one of those who achieved the establishment of the League of Nations at the Paris Peace Conference. Wilson's Secretary of State, William Jennings Bryan, whose pacifist goals Wilson ignored, resigned in frustration in June 1915. Public opinion reacted with outrage to suspected German sabotage of Black Tom in Jersey City, New Jersey on 30 July 1916, and to the Kingsland explosion on 11 January 1917 in present-day Lyndhurst, New Jersey.
See also: Opposition to World War I
American public opinion was divided, with most Americans until early 1917 largely of the opinion that the United States should stay out of the war. Opinion changed gradually, partly in response to German actions in Belgium and the Lusitania, partly as German Americans lost influence, and partly in response to Wilson's position that America had to play a role to make the world safe for democracy.
In the general public, there was little if any support for entering the war on the side of Germany. The great majority of German Americans, as well as Scandinavian Americans, wanted the United States to remain neutral; however, at the outbreak of war, thousands of US citizens had tried to enlist in the German army. The Irish Catholic community, based in the large cities and often in control of the Democratic Party apparatus, was strongly hostile to helping Britain in any way, especially after the Easter uprising of 1916 in Ireland. Most of the Protestant church leaders in the United States, regardless of their theology, favoured pacifistic solutions whereby the United States would broker a peace. Most of the leaders of the women's movement, typified by Jane Addams, likewise sought pacifistic solutions. The most prominent opponent of war was industrialistHenry Ford, who personally financed and led a peace ship to Europe to try to negotiate among the belligerents; no negotiations resulted.
Britain had significant support among intellectuals, Yankees, and families with close ties to Britain. The most prominent leader was Samuel Insull of Chicago, a leading industrialist who had emigrated from England. Insull funded many propaganda efforts, and financed young Americans who wished to fight by joining the Canadian military, Canada at that time being a Dominion of the British Empire.
Main article: Preparedness Movement
By 1915, Americans were paying much more attention to the war. The sinking of the Lusitania aroused furious denunciations of German brutality. By 1915, in Eastern cities a new "Preparedness" movement emerged. It argued that the United States needed to build up immediately strong naval and land forces for defensive purposes; an unspoken assumption was that America would fight sooner or later. The driving forces behind Preparedness were all Republicans, notably General Leonard Wood, ex-president Theodore Roosevelt, and former secretaries of war Elihu Root and Henry Stimson; they enlisted many of the nation's most prominent bankers, industrialists, lawyers and scions of prominent families. Indeed, there emerged an "Atlanticist" foreign policy establishment, a group of influential Americans drawn primarily from upper-class lawyers, bankers, academics, and politicians of the Northeast, committed to a strand of Anglophile internationalism.
The Preparedness movement had what political scientists call a "realism" philosophy of world affairs—they believed that economic strength and military muscle were more decisive than idealistic crusades focused on causes like democracy and national self-determination. Emphasizing over and over the weak state of national defences, they showed that the United States' 100,000-man Army, even augmented by the 112,000-strong National Guard, was outnumbered 20 to one by the German army; similarly in 1915, the armed forces of Great Britain and the British Empire, France, Russia, the Austro-Hungarian Empire, Ottoman Empire, Italy, Bulgaria, Romania, Serbia, Belgium, Japan and Greece were all larger and more experienced than the United States military.
They called for UMT or "universal military service" under which the 600,000 men who turned 18 every year would be required to spend six months in military training, and then be assigned to reserve units. The small regular army would primarily be a training agency. Public opinion, however, was not willing to go that far.
Both the regular army and the Preparedness leaders had a low opinion of the National Guard, which it saw as politicized, provincial, poorly armed, ill trained, too inclined to idealistic crusading (as against Spain in 1898), and too lacking in understanding of world affairs. The National Guard on the other hand was securely rooted in state and local politics, with representation from a very broad cross section of the US political economy. The Guard was one of the nation's few institutions that (in some northern states) accepted black men on an equal footing with white men.
The Democratic party saw the Preparedness movement as a threat. Roosevelt, Root and Wood were prospective Republican presidential candidates. More subtly, the Democrats were rooted in localism that appreciated the National Guard, and the voters were hostile to the rich and powerful in the first place. Working with the Democrats who controlled Congress, Wilson was able to sidetrack the Preparedness forces. Army and Navy leaders were forced to testify before Congress to the effect that the nation's military was in excellent shape.
In reality, neither the US Army nor US Navy was in shape for war in terms of manpower, size, military hardware or experience. The Navy had fine ships but Wilson had been using them to threaten Mexico, and the fleet's readiness had suffered. The crews of the Texas and the New York, the two newest and largest battleships, had never fired a gun, and the morale of the sailors was low. The Army and Navy air forces were tiny in size. Despite the flood of new weapons systems unveiled in the war in Europe, the Army was paying scant attention. For example, it was making no studies of trench warfare, poison gas or tanks, and was unfamiliar with the rapid evolution of Aerial warfare. The Democrats in Congress tried to cut the military budget in 1915. The Preparedness movement effectively exploited the surge of outrage over the "Lusitania" in May 1915, forcing the Democrats to promise some improvements to the military and naval forces. Wilson, less fearful of the Navy, embraced a long-term building program designed to make the fleet the equal of the British Royal Navy by the mid-1920s, although this would not come to pass until after World War II. "Realism" was at work here; the admirals were Mahanians and they therefore wanted a surface fleet of heavy battleships second to none—that is, equal to Great Britain. The facts of submarine warfare (which necessitated destroyers, not battleships) and the possibilities of imminent war with Germany (or with Britain, for that matter), were simply ignored.
Wilson's decision touched off a firestorm. Secretary of War Lindley Garrison adopted many of the proposals of the Preparedness leaders, especially their emphasis on a large federal reserves and abandonment of the National Guard. Garrison's proposals not only outraged the provincial politicians of both parties, they also offended a strongly held belief shared by the liberal wing of the Progressive movement, that was, that warfare always had a hidden economic motivation. Specifically, they warned the chief warmongers were New York bankers (such as J. P. Morgan) with millions at risk, profiteering munition makers (such as Bethlehem Steel, which made armour, and DuPont, which made powder) and unspecified industrialists searching for global markets to control. Antiwar critics blasted them. These selfish special interests were too powerful, especially, Senator La Follette noted, in the conservative wing of the Republican Party. The only road to peace was disarmament in the eyes of many.
Garrison's plan unleashed the fiercest battle in peacetime history over the relationship of military planning to national goals. In peacetime, War Department arsenals and Navy yards manufactured nearly all munitions that lacked civilian uses, including warships, artillery, naval guns, and shells. Items available on the civilian market, such as food, horses, saddles, wagons, and uniforms were always purchased from civilian contractors.
Peace leaders like Jane Addams of Hull House and David Starr Jordan of Stanford University redoubled their efforts, and now turned their voices against the President because he was "sowing the seeds of militarism, raising up a military and naval caste." Many ministers, professors, farm spokesmen and labor union leaders joined in, with powerful support from a band of four dozen southern Democrats in Congress who took control of the House Military Affairs Committee. Wilson, in deep trouble, took his cause to the people in a major speaking tour in early 1916, a warm-up for his reelection campaign that fall.
Wilson seemed to have won over the middle classes, but had little impact on the largely ethnic working classes and the deeply isolationist farmers. Congress still refused to budge, so Wilson replaced Garrison as Secretary of War with Newton Baker, the Democratic mayor of Cleveland and an outspoken opponent of preparedness. The upshot was a compromise passed in May 1916, as the war raged on and Berlin was debating whether America was so weak it could be ignored. The Army was to double in size to 11,300 officers and 208,000 men, with no reserves, and a National Guard that would be enlarged in five years to 440,000 men. Summer camps on the Plattsburg model were authorized for new officers, and the government was given $20 million to build a nitrate plant of its own. Preparedness supporters were downcast, the antiwar people were jubilant. The United States would now be too weak to go to war. Colonel Robert L. Bullard privately complained that "Both sides [Britain and Germany] treat us with scorn and contempt; our fool, smug conceit of superiority has been exploded in our faces and deservedly.". The House gutted the naval plans as well, defeating a "big navy" plan by 189 to 183, and scuttling the battleships. The battle of Jutland (May 31/June 1, 1916) saw the main German High Seas Fleet engage in a monumental yet inconclusive clash with the far stronger Grand Fleet of the Royal Navy. Arguing this battle proved the validity of Mahanian doctrine, the navalists took control in the Senate, broke the House coalition, and authorized a rapid three-year buildup of all classes of warships. A new weapons system, naval aviation, received $3.5 million, and the government was authorized to build its own armour-plate factory. The very weakness of American military power encouraged Berlin to start its unrestricted submarine attacks in 1917. It knew this meant war with America, but it could discount the immediate risk because the US Army was negligible and the new warships would not be at sea until 1919 by which time the war would be over, Germany thought, with Germany victorious. The notion that armaments led to war was turned on its head: refusal to arm in 1916 led to war in 1917.
In January 1917, Germany resumed unrestricted submarine warfare. The German Foreign minister, Arthur Zimmermann invited revolution-torn Mexico to join the war as Germany's ally against the United States in the Zimmermann Telegram. In return, the Germans would send Mexico money and help it recover the territories of Texas, New Mexico and Arizona that Mexico lost during the Mexican–American War 70 years earlier. British intelligence intercepted the telegram and passed the information on to Washington. Wilson released the Zimmerman note to the public and Americans saw it as a casus belli—a cause for war.
At first, Wilson tried to maintain neutrality while fighting off the submarines by arming American merchant ships with guns powerful enough to sink German submarines on the surface (but useless when the U-boats were under water). After submarines sank seven US merchant ships, Wilson finally went to Congress calling for a declaration of war on Germany, which Congress voted on April 6, 1917.
As a result of the Russian February Revolution in 1917, the Tsar abdicated and was replaced by a Russian Provisional Government. This helped overcome Wilson's reluctance to having the US fight alongside a country ruled by an absolutist monarch. Pleased by the Provisional Government's pro-war stance, the US accorded the new government diplomatic recognition on March 9, 1917.
Although the United States declared war on Germany on April 6, 1917, it did not initially declare war on the other Central Powers, a state of affairs that Woodrow Wilson described as an "embarrassing obstacle" in his State of the Union speech. Congress declared war on the Austro-Hungarian Empire on December 7, 1917, but never made declarations of war against the other Central Powers, Bulgaria, the Ottoman Empire or the various co-belligerents allied with the Central Powers. Thus, the United States remained uninvolved in the military campaigns in central and eastern Europe, the Middle East, the Caucasus, North Africa, Sub-Saharan Africa, Asia and the Pacific.
Main article: United States home front during World War I
The home front saw a systematic mobilization of the entire population and the entire economy to produce the soldiers, food supplies, munitions, and money needed to win the war. Although the United States entered the war in 1917, there had been very little planning, or even recognition of the problems that the British and other Allies had to solve on their home fronts. As a result, the level of confusion was high in the first 12 months, then efficiency took control.
The war came in the midst of the Progressive Era, when efficiency and expertise were highly valued. Therefore, the federal government set up a multitude of temporary agencies with 500,000 to 1,000,000 new employees to bring together the expertise necessary to redirect the economy into the production of munitions and food necessary for the war, as well as for propaganda purposes.
The United States Food Administration under Herbert Hoover launched a massive campaign to teach Americans to economize on their food budgets and grow victory gardens in their backyards, where crops were grown for US soldiers. It managed the nation's food distribution and prices.
Crucial to US participation was the sweeping domestic propaganda campaign executed by the Committee on Public Information, overseen by George Creel. The campaign consisted of tens of thousands of government-selected community leaders giving brief carefully scripted pro-war speeches at thousands of public gatherings. Along with other branches of government and private vigilante groups like the American Protective League, it also included the general repression and harassment of people either opposed to American entry into the war or of German heritage. Rumors about a German-induced attempt to start uprising among Black Americans caused a wave of lynchings to occur in the Southern United States. Other forms of propaganda included newsreels, photos, large-print posters (designed by several well-known illustrators of the day, including Louis D. Fancher and Henry Reuterdahl), magazine and newspaper articles, and billboards.
Main article: Effect of World War I on children in the United States
The nation placed a great importance on the role of children, teaching them patriotism and national service and asking them to encourage war support and educate the public about the importance of the war. The Boy Scouts of America helped distribute war pamphlets, helped sell war bonds, and helped to drive nationalism and support for the war.
Army and Navy
Main article: American Expeditionary Forces
The United States as late as 1917 maintained only a small army, and smaller than thirteen of the nations and empires already active in the war. After the passage of the Selective Service Act in 1917, it drafted 4 million men into military service. By the summer of 1918, about 2 million US soldiers had arrived in France, about half of whom eventually saw front-line service; by the Armistice of November 11 approximately 10,000 fresh soldiers were arriving in France daily. In 1917, Congress gave US citizenship to Puerto Ricans when they were drafted to participate in World War I, as part of the Jones Act. In the end, Germany miscalculated the United States' influence on the outcome of the conflict, believing it would be many more months before US troops would arrive and overestimating the effectiveness of U-boats in slowing the American buildup.
The United States Navy sent a battleship group to Scapa Flow to join with the British Grand Fleet, destroyers to Queenstown, Ireland and submarines to help guard convoys. Several regiments of Marines were also dispatched to France. The British and French wanted US units used to reinforce their troops already on the battle lines and not to waste scarce shipping on bringing over supplies. The US rejected the first proposition and accepted the second. General John J. Pershing, American Expeditionary Forces (AEF) commander, refused to break up US units to serve as mere reinforcements for British Empire and French units. As an exception, he did allow African-American combat regiments to fight in French divisions. The Harlem Hellfighters fought as part of the French 16th Division, earning a unit Croix de Guerre for their actions at Château-Thierry, Belleau Wood, and Séchault.
Impact of US forces on the war
On the battlefields of France in spring 1918, the war-weary Allied armies enthusiastically welcomed the fresh American troops. They arrived at the rate of 10,000 a day, at a time when the Germans were unable to replace their losses. The Americans won a victory at Cantigny, then again in defensive stands at Chateau-Thierry and Belleau Wood. The Americans helped the British Empire, French and Portuguese forces defeat and turn back the powerful final German offensive (Spring Offensive of March to July, 1918), and most importantly, the Americans played a role in the Allied final offensive (Hundred Days Offensive of August to November). However, many American commanders used the same flawed tactics which the British, French, Germans and others had abandoned early in the war, and so many American offensives were not particularly effective. Pershing continued to commit troops to these full- frontal attacks, resulting in high casualties against experienced veteran German and Austrian-Hungarian units. Nevertheless, the infusion of new and fresh US troops greatly strengthened the Allies' strategic position and boosted morale. The Allies achieved victory over Germany on November 11, 1918 after German morale had collapsed both at home and on the battlefield.
After the war
The Allies imposed severe economic penalties on Germany in the Treaty of Versailles, and both the British and French empires annexed former German and Ottoman Empire colonies in Africa, the Middle East and the Pacific. Russia was not involved in this because of their withdrawal from the war soon after the Russian revolution in 1917. The United States swiftly pulled its troops out of most of Europe after Germany had surrendered, but sent troops into Russia on the side of the virulently anti-Semitic and anti-communist White Army where they were defeated. Two thirds of the American soldiers participating in the war had returned home already when the Treaty of Versailles was signed. Only a lone U.S. Army unit was left in the European soil at end of the decade. The United States Senate did not ratify the Treaty of Versailles; instead, the United States signed separate peace treaties with Germany, Austria and Hungary in August 1921. The Senate also refused to enter the newly created League of Nations on Wilson's terms, and Wilson rejected the Senate's compromise proposal.
- ^Wevera & van Bergenc 2014
- ^Byerly 2010
- ^Jeanette Keith (2004). Rich Man's War, Poor Man's Fight: Race, Class, and Power in the Rural South during the First World War. U. of North Carolina Press. pp. 1–5. ISBN 978-0-8078-7589-6.
- ^Barnes, Harry Elmer. The Genesis of the World War (1925) pp. 590–591
- ^"World War One". BBC History.
- ^Link, Arthur S. (1972). Woodrow Wilson and the Progressive Era, 1910–1917. New York: Harper & Row. pp. 252–282.
- ^H.J.Res.169: Declaration of War with Austria-Hungary, WWI, United States Senate
- ^Jennifer K. Elsea; Matthew C. Weed (April 18, 2014). "Declarations of War and Authorizations for the Use of Military Force: Historical Background and Legal Implications"(PDF). p. 9. Retrieved July 21, 2014.
- ^Kero, Reino; Kostiainen, Auvo; Virtanen, Keijo (1991). Uuden Maailman Jättiläinen: Yhdysvaltain historia (in Finnish). Keuruu: Otava. p. 332. ISBN 951-1-11435-2.
- ^H.W. Brands, T.R.: The Last Romantic (1997) p=756
- ^Karp 1979
- ^Jules Witcover, Black Tom: Imperial Germany's Secret War in America (1989).
- ^Ernest R. May, The World War and American Isolation, 1914-1917 (1959)
- ^Hew Strachan, The First World War (2003)
- ^TV Series, The First World War Part 7: Blockade (2003)
- ^William M. Leary, Jr., "Woodrow Wilson, Irish Americans, and the Election of 1916," Journal of American History Vol. 54, No. 1 (Jun. 1967), pp. 57-72 JSTOR 1900319
- ^Patricia Appelbaum, Kingdom to Commune: Protestant Pacifist Culture between World War I and the Vietnam Era (2009)
- ^Frances H. Early, A World without War: How U.S. Feminists and Pacifists Resisted World War I (1997)
- ^Barbara S. Kraft, The peace ship: Henry Ford's pacifist adventure in the First World War (1978)
- ^H. C. Peterson, Propaganda for War: The Campaign Against American Neutrality, 1914-1917 (1968)
- ^Forrest McDonald, Insull: The Rise and Fall of a Billionaire Utility Tycoon (2004)
- ^"Constitution Act, 1867". Her Majesty the Queen in Right of Canada. March 29, 1867. p. s.9. Retrieved September 3, 2012.
- ^Priscilla Roberts, "Paul D. Cravath, the First World War, and the Anglophile Internationalist Tradition." Australian Journal of Politics and History 2005 51(2): 194-215. ISSN 0004-9522doi:10.1111/j.1467-8497.2005.00370.x
- ^Scott Manning (2007-01-04). "World War I: Troop Statistics". Scottmanning.com. Retrieved 2016-11-06.
- ^Chambers 93; Weigley Army 345
- ^"The Royal Navy". Britannica Online. Encyclopædia Britannica. Retrieved 3 June 2009.
- ^Link, Woodrow Wilson and the Progressive Era pp 179ff
- ^Daniel R. Beaver, Newton D. Baker and the American War Effort, 1917-1919 (1966)
- ^Allan Millett, The general: Robert L. Bullard and officership in the United States Army, 1881-1925 (1975) p. 293
- ^Barbara Tuchman, The Zimmerman Telegram (1966)
- ^see: Woodrow Wilson declares war on Germany.
- ^Richard Pipes A Concise History of the Russian Revolution, Vintage Books 1996 p.93
- ^Woodrow Wilson: Fifth Annual Message to the Gentlemen of the Congress - 4 December 1917
- ^Official Declarations of War by Congress - Senate.gove
- ^"US declaration of war against Austria-Hungary | The Gilder Lehrman Institute of American History". Gilderlehrman.org. 1917-12-07. Retrieved 2016-11-06.
- ^David Kennedy, Over Here
- ^Spencer Tucker and Priscilla Mary Roberts, eds., World War I: encyclopedia (2005), p. 1205
- ^George H. Nash, The Life of Herbert Hoover: Master of Emergencies, 1917-1918 (1996)
- ^Kennedy, Over Here pp. 59–72
- ^Ross, pp. 244–246
- ^Kero, Reino; Kostiainen, Auvo; Virtanen, Keijo (1991). Uuden Maailman Jättiläinen: Yhdysvaltain historia (in Finnish). Keuruu: Otava. p. 334. ISBN 951-1-11435-2.
- ^Kennedy, Over Here pp 59–72
- ^Kero, Reino; Kostiainen, Auvo; Virtanen, Keijo (1991). Uuden Maailman Jättiläinen: Yhdysvaltain historia (in Finnish). Keuruu: Otava. p. 335. ISBN 951-1-11435-2.
- ^Stephen Vaughn, Holding Fast the Inner Lines: Democracy, Nationalism, and the Committee on Public Information (1980)
- ^Jay Mechling, On My Honor: Boy Scouts and the Making of American Youth (2004) p 128
- ^"Selective Service System: History and Records". Sss.gov. Archived from the original on May 7, 2009. Retrieved July 27, 2010.
- ^ ab"World War I Timeline - 1918 - A Fateful Ending". The History Place. Retrieved 2016-11-06.
- ^Wilgus, p. 52
- ^Teaching With Documents: Photographs of the 369th Infantry and African Americans during World War I, U.S. National Archives and Records Administration, retrieved October 29, 2009
- ^Ferguson, Niall (1998). The Pity of War. Penguin.
- ^Edward M. Coffman, The War to End All Wars: The American Military Experience in World War I (1998)
- ^Kero, Reino; Kostiainen, Auvo; Virtanen, Keijo (1991). Uuden Maailman Jättiläinen: Yhdysvaltain historia (in Finnish). Keuruu: Otava. p. 344. ISBN 951-1-11435-2.
- ^Kero, Reino; Kostiainen, Auvo; Virtanen, Keijo (1991). Uuden Maailman Jättiläinen: Yhdysvaltain historia (in Finnish). Keuruu: Otava. pp. 342–343. ISBN 951-1-11435-2.
- Bassett, John Spencer. Our War with Germany: A History (1919) online edition
- Breen, William J. Uncle Sam at Home: Civilian Mobilization, Wartime Federalism, and the Council of National Defense, 1917-1919 (1984))
- Capozzola, Christopher. Uncle Sam Wants You: World War I and the Making of the Modern American Citizen (2008)
- Carlisle, Rodney. Sovereignty at Sea: U.S. Merchant Ships and American Entry into World War I (2010)
- Chambers, John W., II. To Raise an Army: The Draft Comes to Modern America (1987)
- Clements, Kendrick A. The Presidency of Woodrow Wilson (1992)
- Coffman, Edward M. The War to End All Wars: The American Military Experience in World War I (1998), a standard military history
- Cooper, John Milton. Woodrow Wilson: A Biography (2009)
- Cooper, John Milton. "The World War and American Memory." Diplomatic History (2014) 38#4 pp: 727-736.
- DuBois, W.E. Burghardt, "An Essay Toward a History of the Black Man in the Great War,"The Crisis, vol. 18, no. 2 (June 1919), pp. 63–87.
- Ferrell, Robert H. Woodrow Wilson and World War I, 1917-1921 (1986)
- Kennedy, David M. Over Here: The First World War and American Society (2004), comprehensive coverage
- Malin, James C. The United States After the World War (1930) online
- Marrin, Albert. The Yanks Are Coming: The United States in the First World War (1986)
- May, Ernest R. The World War and American Isolation, 1914-1917 (1959) online at ACLS e-books, highly influential study
- Nash, George H. The Life of Herbert Hoover: Master of Emergencies, 1917-1918 (1996) excerpt and text search
- Petkov, Petko M. (1991). The United States and Bulgaria in World War I. Boulder: Eastern European Monographs.
- Schaffer, Ronald. America in the Great War: The Rise of the War-Welfare State (1991)
- Snow, William J. Signposts of Experience: World War Memoits of Major General William J. Snow, USA-Retired, Chief of Field Artillery 1918-1927. CreateSpace Independent Publishing Platform, May 15, 2014. ISBN 978-1499673777.
- Tucker, Spencer C., and Priscilla Mary Roberts, eds. The Encyclopedia of World War I : A Political, Social, and Military History (5 vol. 2005)
- Van Ells, Mark D. "America and World War I: A Traveler's Guide" (2014)
- Vaughn, Stephen. Holding Fast the Inner Lines: Democracy, Nationalism, and the Committee on Public Information (University of North Carolina Press, 1980)
- Venzon, Anne ed. The United States in the First World War: An Encyclopedia (1995)
- Young, Ernest William. The Wilson Administration and the Great War (1922) online edition
- Zieger, Robert H. America's Great War: World War I and the American Experience (2000)
- Keene, Jennifer D. "Remembering the “Forgotten War”: American Historiography on World War I." Historian 78#3 (2016): 439-468.
- Keene, Jennifer D.: United States of America , in: 1914-1918-online. International Encyclopedia of the First World War.
- Gutiérrez, Edward A.: Between Acceptance and Refusal - Soldiers' Attitudes Towards War (USA) , in: 1914-1918-online. International Encyclopedia of the First World War.
- Ford, Nancy Gentile: Civilian and Military Power (USA) , in: 1914-1918-online. International Encyclopedia of the First World War.
- Kennedy, Ross: Governments, Parliaments and Parties (USA) , in: 1914-1918-online. International Encyclopedia of the First World War.
- Taillon, Paul Michel: Labour Movements, Trade Unions and Strikes (USA) , in: 1914-1918-online. International Encyclopedia of the First World War.
- Little, Branden: Making Sense of the War (USA) , in: 1914-1918-online. International Encyclopedia of the First World War.
October21, 1916French renew attack on Verdun
November7Wilson reelected on antiwar platform; begins diplomatic initiatives
February1, 1917Germany begins unrestricted submarine warfare
February3German U-boat sinks U.S. cargo ship HousatonicUnited States breaks off diplomatic relations with Germany
February24United States learns of Zimmermann telegram
March1Zimmermann telegram published in American press
April2Wilson asks Congress to declare war
April6United States declares war on Germany
May24First U.S. convoy to protect shipping to Europe departs
July4U.S. troops march through central Paris to Lafayette’s tomb
September4First U.S. war fatalities
November2–3First U.S. combat mission
January8, 1918Wilson gives “Fourteen Points” speech before U.S. Congress
David Lloyd George - British prime minister during the war; rejected Wilson’s peace initiatives in 1916
John J. Pershing - Commander of U.S. forces deployed in Europe
Woodrow Wilson - U.S. president during the war; attempted to maintain neutrality but saw it crumble in 1917
Alfred Zimmermann - German foreign minister; sent telegram attempting to incite Mexico to attack the United States
Since the beginning of World War I in 1914, the United States, under President Woodrow Wilson, had maintained strict neutrality, other than providing material assistance to the Allies. Even in May 1915, when a German submarine sank the British ocean liner Lusitania, killing 128 U.S. citizens out of a total 1,200 dead, the United States, though in uproar, remained neutral. In the autumn of 1916, Wilson was reelected after running largely on a platform of antiwar, pro-neutrality rhetoric.
By the time of Wilson’s reelection victory, the war had left millions dead, cities and economies in ruins, and no decisive victory in sight for any side. It seemed that the war might actually burn itself out. In November and December 1916, Wilson began a series of initiatives to broker a resolution, sending out diplomatic notes to the governments of every nation involved. Germany responded positively and went so far as to recommend opening immediate peace negotiations. France, however, responded by launching a renewed attack against the Germans in Verdun. British prime minister David Lloyd George rejected Wilson’s initiative directly.
Unrestricted Submarine Warfare
In January 1917, Germany announced that it would lift all restrictions on submarine warfare starting on February 1. This declaration meant that German U-boat commanders were suddenly authorized to sink all ships that they believed to be providing aid of any sort to the Allies. Because the primary goal was to starve Britain into surrendering, the German effort would focus largely on ships crossing the Atlantic from the United States and Canada.
The first victim of this new policy was the American cargo ship Housatonic, which a German U-boat sank on February 3, 1917. In response, President Wilson broke off diplomatic relations with Germany the same day. The escalation was serious and turned out to be a major step toward the United States’ entry into the war.
The Zimmermann Telegram
In the meantime, other German mischief paved the road to war with the United States even more smoothly. In February 1917, British intelligence intercepted a telegram from Germany that they had intercepted in January. In the telegram, sent by German foreign minister Alfred Zimmermann to his ambassador in Mexico on January 16, Zimmermann instructed the ambassador to offer Mexico generous financial aid if it would ally itself with Germany against the United States. Furthermore, the telegram promised German support for Mexico in reconquering its lost territory in Texas, New Mexico, and Arizona.
On March 1, 1917, the text of the Zimmermann telegram appeared on the front pages of American newspapers, and in a heartbeat, American public opinion shifted in favor of entering the war.