What is this? Every American citizen should know that this device is worn by our U.S.

What is this? Every American citizen should know that this device is worn by our U.S. Marines, who serve at sea, at home, and abroad. LOC Summary: Poster showing the emblem of the United States Marine Corps. LOC Notes: Text continues: There is a splendid opportunity for foreign travel with good pay and all expenses paid. It's a two-in-one service both naval and military. Enlist to-day! For full information apply at U.S. Marine Corps recruiting station - ask the postmaster. Date Created/Published: 1917. World War 1 poster provided by LOC. Original medium: 1 print (poster) : lithograph, color ; 24 x 51 cm.