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The U.S. During World War I

How, Why And When The United States Entered The War

World War I U.S. military uniform with 'doughboy hat,' 1917-1919

Although many countries were drawn into the conflict of World War I, the United States maintained a policy of isolationism advocated by President Wilson. Elected in 1912 as the 28th president of the United States, Thomas Woodrow Wilson served from 1913 to 1921. The president vowed to keep the country out of the war, but attacks on American lives eventually made this impossible. On May 7, 1915, a German U-boat sank the British liner R.M.S. Lusitania off the coast of Ireland, killing 1,198 people with 128 Americans among the fatalities.

The president vowed to keep the country out of the war, but attacks on American lives eventually made this impossible. On May 7, 1915, a German U-boat sank the British liner R.M.S. Lusitania off the coast of Ireland, killing 1,198 people with 128 Americans among the fatalities.

President Wilson denounced attacks on passenger ships and repeatedly issued warnings to the Central Powers that the United States would not tolerate unrestricted submarine warfare which was a violation of international law. Germany initially curtailed its attacks, but in January 1917, it resumed unrestricted warfare sinking seven U.S. ships.

Germany also attempted to recruit Mexico to join the Central Powers against the United States by promising financial support to help the Mexicans recover their former territories of Texas, New Mexico and Arizona.

Your Flag And Mine patriotic booklet Cover

In response to Germany’s actions, President Wilson addressed Congress on April 2, 1917, appealing for the United States to enter the war as “the world must be made safe for democracy.” Four days later, the United States declared war on Germany.

Although President Wilson and Congress saw the need for the United States’ entry into the global conflict, it was necessary to convince the American people of their need to support the war effort. This was not an easy task as the president had won re-election based on his promise to keep the United States out of the fighting. President Wilson and his administration developed a series of propaganda campaigns that focused on the patriotic duty of all Americans to back the war effort in order to defeat the enemy, thus enabling the preservation of democracy at home and abroad. On April 14, 1917, President Wilson established a propaganda organization called the Committee on Public Information (CPI) and appointed George Creel, an investigative reporter and writer, as chairman. The committee remained active until June 30, 1919.

On April 14, 1917, President Wilson established a propaganda organization called the Committee on Public Information (CPI) and appointed George Creel, an investigative reporter and writer, as chairman. The committee remained active until June 30, 1919.

The CPI used multiple forms of media to “advertise” the war. They organized a series of public propaganda speakers across the country, called “Four Minute Men,” to keep Americans informed of the war efforts. The committee published a daily newspaper and produced war films. It also designed educational materials for public schools and universities to energize younger generations to support the United States. The CPI even wrote specific war materials that included suggested prayers for churches and religious institutions.

Evening Bulletin cover. Patriotic songs and American Sentiments
Evening Bulletin cover. Patriotic songs and American Sentiments
World War I 'Patriotic Posters: Stop-Look-Act!' June 6, 1918.

Understanding the power of printed images in the form of posters and cartoon illustrations, Creel recruited Charles Dana Gibson to head CPI’s Division of Pictorial Publicity. One of America’s most popular illustrators and well known for his creation of the “Gibson Girl” image, Gibson employed the best artists, cartoonists and illustrators to produce 1,438 designs for World War I propaganda posters, cards, buttons and cartoons. The Division of Pictorial Publicity was highly recognized for its contribution to the war effort.


The CPI encouraged others to join the war-propaganda mission. Hollywood produced war‑related films to stir American patriotism. Patriotic songs were created, including George M. Cohan’s popular melody, “Over There,” that was written on April 7, 1917, and became America’s theme song for the war. All branches of the military produced war propaganda materials to recruit young men for military service.

Paramount and Artcraft Motion Pictures advertisement in The National Weekly - October 26, 1918
Cole Porter
Cole Porter
Bill 'Bojangles' Robinson & Shirley Temple
Bill "Bojangles" Robinson
Walt Disney Red Cross Ambulance Driver
Walt Disney
Humphrey Bogart
Humphrey Bogart

A Call to Arms

At the time the United States entered the war, it had a very small, ill-equipped military force. Artists and illustrators designed recruiting posters which flooded the country, enticing men to voluntarily enlist in the service branches. In order to build an adequate fighting force, Congress passed the Selective Service Act on May 18, 1917. This law required all men between the ages of 21 and 30 to register for military duty. By the end of the war, 2.8 million men had been drafted for service.

Selective service registration cards. John Synewski from New Jersey & Pedro Flores from Texas

Posters used patriotic slogans and symbols to inspire Americans to serve their country by enlisting in the military.

U.S. Marines - Active on Land and Sea poster by Sidney H. Riesenberg - 1917
Enlist in the Navy - To Arms poster by Milton Herbert Bancroft - 1917
Spirit of 1917 poster by L. Whitman - 1917
Rally 'Round The Flag poster by Sidney H. Riesenberg - 1916

To help prepare American soldiers stationed abroad during the war, pamphlets and booklets containing language translations and information on local currency were issued. The Victor Talking Machine Company developed tutorial foreign-language recordings, including associated translation booklets, to teach French to American soldiers deployed to France.

Victor Records Speak French Correctly poster by the Victor Talking Machine Co. - 1917
'First Aid' French for American Soldiers, with Victor Talking Machine Co.’s French lessons on 2 recorded discs.

Providing opportunities for entertainment was a way to keep the troops in high spirits. American soldiers craved reading materials and enjoyed listening to music as a means of temporarily escaping the war-time conditions. The American Library Association’s Library War Service maintained libraries for servicemen both in the United States and overseas. In addition to providing a means of diversion, these libraries served to combat low literacy rates, a concern among U.S. military officials. Local book-drives were organized to encourage Americans to donate books for the soldiers’ libraries. It is estimated that between 1917 and 1920, 7 million to 10 million books and magazines were distributed for use by the troops.

Music played on Victrolas was also a popular pastime, and The Victor Talking Machine Company produced many popular records.

Books Wanted For Our Men poster by Charles Buckles Falls - 1918
America's Army WWI booklet
Victor Records Delight The Soldier Boys poster by the Victor Talking Machine Co. - WWI era
Victor Talking Machine Victrola, VV-VI model
Victor Victrola advertisement Carrying the Songs of Victory across the seas
Victor Victrola advertisement 'By these men we shall conquer! - The Victrola enlisted in the War for Democracy'

American Liberty Loan Bonds

Victory Liberty Loan Medal front. Awarded by the U.S. Treasury Department for patriotic service in behalf of the Liberty Loans

The Wilson administration knew the Great War would come with a large price tag. To generate the necessary funds, Secretary of the Treasury William Gibbs McAdoo created Liberty Loan Bonds. These government bonds paid an interest rate lower than that of banks, but McAdoo utilized propaganda posters drawing on Americans’ sense of patriotism to encourage them to buy the bonds.

He enlisted famous artists like Howard Chandler Christy, creator of the “Christy Girl” image, to design patriotic posters, and invited popular actors such as Charlie Chaplin, Mary Pickford and Douglas Fairbanks to participate in bond rallies around the country.

Regardless of their financial means, a high percentage of Americans bought Liberty Loan Bonds. There were also bond campaigns spearheaded by the Girl and Boy Scouts, allowing children to participate in the war effort. During World War I, the American government issued four different Liberty Loan Bonds, while the Victory Liberty Loan Bond was established in 1919 to finish paying war expenses. The United States paid an estimated $32 billion to finance the war.

Ring It Again poster by E. Ketterlinus & Co. - 1917
My Soldier poster by H.H. Green - 1917
Sure! We'll Finish the Job poster by Gerrit A. Beneker - 1918
Subscriber Victory Loan decal - 1919
Weapons For Liberty poster by Joseph Christian Leyendecker - 1918
'The Patriotic Dressing Dolls.' Published exclusively for Farm and Home, The National Monthly Magazine of Rural Life.

American Red Cross

The Spirit of America poster by Howard Chandler Christy - 1919

The American Red Cross was founded by Clarissa Harlow (Clara) Barton in 1881 to provide relief to individuals impacted by natural disasters or military conflict. In 1914, the Red Cross sailed the S.S. Red Cross, a relief ship carrying surgeons and nurses, along with medical supplies, to Europe at the beginning of the Great War.

When the United States entered World War I, President Wilson called for all Americans to volunteer and donate funds to help the Red Cross aid soldiers fighting in Europe. To prepare the organization to meet the war efforts, Henry P. Davison was appointed director. Under his leadership, the American Red Cross provided services in Europe to both Allied and American military personnel as well as to civilian war victims.

Put Fighting Blood In Your Business poster Dan Smith - 1917
I Summon You To Comradeship poster by Leo Mielziner - 1918. Featuring Woodrow Wilson.
Have You A Red Cross Service Flag? Poster by Jessie Wilcox Smith - 1918
The Greatest Mother in The World poster by Alonzo Earl Foringer - 1918

The Red Cross provided the medical response during the Great War. The organization enrolled over 23,000 nurses, with 19,931 assigned to active duty in the Army and Navy. Many nurses participated in Red Cross overseas units and were stationed mostly at hospitals in France. The Red Cross provided medical supplies which included surgical dressings and garments for patients.

Besides medical support and assistance, the Red Cross also provided canteen services. It operated 700 canteens in the United States and opened 130 more in France. To ensure the Red Cross had ample funds to provide all of its services, Americans were encouraged to give to various war campaigns such as the “Second War Fund.”

Red Cross Canteen Workers Uniform worn by Marie Petty of Dover, Delaware, in 1919

In order to be accessible during the war, the organization formed mobile units which included ambulances and other vehicles to transport supplies and both wounded soldiers and civilians.

Red Cross volunteer and William D. Stevenson, plant manager, with donation box at the Victor Talking Machine Co. Camden, N.J. plant.
Make Good The Promise poster by Artist Uknown - Ca. 1917

Suggested Reading

  • Russell Freedman. The War to End All Wars: World War I, New York: Clarion Books, 2010.
  • Evelyn M. Monahan and Rosemary Neidel-Greenlee. A Few Good Women, New York: Alfred A. Knopf, 2010.
  • Robert H. Zieger. America’s Great War: World War I and the American Experience, Lanham, MD: Rowman & Littlefield, 2000.