The United States entered World War One
on April 6, 1917 on the side of the Allies. The war in Europe that
began in August, 1914, had already claimed millions of lives, as
the Allies (Britain, France, Canada, Australia, New Zealand,
Italy, Russia, Belgium, Portugual, and others) battled against the
Central Powers (Germany, Austria-Hungary, Bulgaria, and the
Ottoman Empire). The U.S. contribution to the war effort
significanlty bolstered the Allies with millions of fresh troops,
and gave the beleaguered French public a big boost in
Nearly 4.7 million Americans served in the
military during World War One.
A total of 116,516 American troops died in
World War One, making it the third deadliest war in U.S. history
after the Civil War and World War Two. Approximately 205,000
Americans were wounded in World War One.
Two future U.S. Presidents served in the
military during World War One. Harry Truman was an artillery
officer and saw battle in France. Dwight Eisenhower was an Army
officer during World War One, but served stateside and did not see
Battle of Cambrai
(November 20, 1917- December 4, 1917)-American forces had just
recently begun arriving in France, and, though this was the first
combat for U.S. troops, American soldiers played a minor role in
this battle against the Germans. Cambrai is considerd a primarily
(March 21, 1918 - Apri1 6, 1918)
Battle of Lys
(April 9 - 27, 1918)
Campaign-In the summer of 1918, the Germans were able to
transfer 50 army divisions to the Western Front due to the
surrender of the Russians on the Eastern Front. The German Spring,
1918 Offensive would test the ability of the new American armies
Cantigny (May 27 - June 5, 1918)-The first full battle by
the U.S. forces in World War One, and the first American
offensive against the Germans.
The Battle of
Belleau Wood (June 1-26, 1918)-U.S. Army and Marine Corps
troops engaged the Germans
The Battle of Château-Thierry
(July 18, 1918)-Part of the larger Battle of the
Marne/Belleau Wood Campaign, U.S. and French troops pushed back
against German forces
Second Battle of The
Marne (July 18 - August 6, 1918)-After the failure of the
Spring, 1918 German Offensive, the Germans launched what would be
their last offensive on the Western Front in the Second Battle of
the Marne. The German offensive was halted by combined British,
French, and American forces. Following this Allied victory, the
Allies began their offensive that would take them into Germany and
victory. When nearly cut off by the retreat of other Allied units,
the U.S. 3rd Infantry Division commander Major General Joseph
Dickman, communicated to the French military "Nous Resterons La -
We shall remain here." The 3rd Infantry Division remained rock
solid at the Battle of the Marne, and earned the nickname "Rock of
Offensive (August 8, 1918 - November 11, 1918)
Oise-Aisne (August 18, 1918- November 11, 1918)
Ypres-Lys (August 19, 1918 - November 11, 1918)
Battle of St.
Mihiel (September 12 - 16, 1918)-This was first and only
offensive launched by the United States Army in World War I
without any other Allied participation. This Amercan attack
caught the Germans by surprise and was a success. The Battle of
St. Mihiel also marks the first use by the United States
military of the terms "H-Hour" and "D-Day."
Battle of St.
Mihiel-American -Engineers returning from the front-From the
Offensive (September 26, 1918- November 11, 1918)-A huge
offensive involving 1.2 million American soldiers, resulting in
28,000 German battle deaths and costing 26,277 American lives.
The Meuse-Argonne Offensive was the largest and costliest
operation of World War I for the American Expeditionary Force
(AEF). To date, the Meuse-Argonne remains the deadliest single
battle in American military history.
Offensive (October 24, 1918 - November 4,1918)-The only U.S.
ground action not on the Western Front. The 332nd U.S. Infantry
Regiment took part in the Italian campaign against Austria-Hungary
in the Italian Alps.