George M. Cohan - 'Over There' (1917)

In "Over There" (1917), George M. Cohan sings about the call to patriotism and the rallying cry for Americans to join the war effort during World War I. The lyrics encourage individuals to enlist and fight for their country overseas, emphasizing the duty, honor, and bravery associated with serving in the military. The song evokes a sense of national pride and unity, urging listeners to take action and support the war cause.