The American Expeditionary Force (AEF) were forces sent to fight in Europe from the USA after the USA entered the Great War in April 1917. Although initially only a token force of one division went to France under General Pershing, by November 1918 the AEF comprised three armies each of three corps, a total of 1,338,000 combat troops. The greater part of the force was infantry, with only small detachments of cavalry being sent to Europe, principally for liaison and remount duties, though a provisional squadron did see some mounted action. A considerable force of artillery was also deployed, but was armed entirely with British or French guns since American production had not made any serious contribution by the time the war ended. A strong tank force was planned but only three battalions, using British and French tanks, saw action. In all, some two million American troops eventually served in France. Research American Expeditionary Force