Uncle Sam is a common national personification of the American government depicted as a stern elderly man with white hair and a goatee beard. He is typically dressed in clothing that recalls the flag of the United States, wearing red, white, blue and stars. He was originally used during the War of 1812, but has been popular ever since, especially through every American conflict of war.

Uncle Sam's most famous role is on a US poster pointing straightforward with the bold lettering "I WANT YOU," used as a form of propaganda to recruit new enlistments in the US Army.