The first line of defense needs you - enlist in the Navy.

The first line of defense needs you - enlist in the Navy. LOC Summary: U.S. Navy recruitment poster showing a ship at sea. LOC Notes: Issued by City of Boston Committee on Public Safety. Date Created/Published: between 1914 and 1918. World War 1 poster provided by LOC. Original medium: 1 print (poster) : lithograph, color.