Suppose They Gave a War and Nobody Came (also known as War Games, Old Soldiers Never) is a 1970 American drama-comedy film directed by Hy Averback, produced by Fred Engel, and starring Brian Keith, Don Ameche, Tony Curtis, Ernest Borgnine, Suzanne Pleshette, Ivan Dixon, and Pamela Britton. The plot is a mixture of comic and dramatic elements and concerns the reactions of a number of World War II veterans to the contemporary US Army.

The title is derived from an American antiwar slogan from the hippie subculture during the Vietnam War era, popularized by Charlotte E. Keyes in her 1966 article for McCall's magazine titled "Suppose They Gave a War and No One Came".