"Are you trained to defend your country?"
Military Training Camps Association, 1916
When America declared war in 1917, its standing army numbered around 127,000 men making recruitment one of the government's highest priorities.
By the end of the war, more than 4 million men and women had served in the military in some capacity.
"Join: Army Navy Marines"
unknown, 1917
"Treat 'em rough - Join the tanks United States Tank Corps"
August William Hutaf, undated
"Even a dog enlists"American Red Cross, undated
"E-e-e-yah-yip Go over with U.S. Marines."
Charles Buckles Falls, 1917
"US Marines - Active Service on Land and Sea"
Sidney H. Riesenberg, 1914-1918
"Men wanted for the army"Michael P. Whelan, 1910-1917
"For Liberty's sake, enlist in the Navy"
"The first line of defense needs you - enlist in the Navy"
Hampton F. Shirer, 1914-1918
"Volunteer, and choose your own branch of the service - Uncle Sam"
Arthur N. Edrop, 1917
"First in France--U.S. Marines"
John A. Coughlin, 1917
"America calls - enlist in the Navy"
J. C. Leyendecker, 1917
"This gun is "over there"--Where are you? Man the guns of the Navy--Get in the game!--Enlist."unknown, 1917