This seems like a poster appealing to sailors serving in the U.S. Navy, with the patriotic images of USS Constitution and the sailor standing with the U.S. flag. However, upon closer inspection, one sees that it is actually attempting to poach American sailors away from the Navy and have them enlist in the 5th Regiment of the New York's "Excelsior Brigade." The small print even uses the sales pitch "Sailors who prefer active service and fresh beef to midnight watches and salt junk are invited to join."
