What was the title of the 1967 film in which John Lennon acted?

The 1967 film in which John Lennon acted was How I Won the War. Directed and produced by Richard Lester, the British black comedy cast Lennon as Private Gripweed, a member of a fictional British Army unit during the Second World War.

Lennon took the role while on a break from the Beatles. Filming took place in 1966 in Germany and Spain, and the production gave him his only non-musical acting role in a feature film. The movie was based on Patrick Ryan’s 1963 novel and used an intentionally stylized mixture of comic scenes, vignettes, direct address, and war-film imagery.

The production also influenced Lennon’s public image. He cut his hair for the role and began wearing round “granny” glasses, an appearance he kept for much of the rest of his life. The other options are Beatles films: Help!, A Hard Day’s Night, and Yellow Submarine, although Lennon’s role in Yellow Submarine was voiced rather than performed as a conventional live-action part.