The Fighting 69th is a 1940 American war film starring James Cagney, Pat O'Brien, and George Brent. The plot is based upon the actual exploits of New York City's 69th Infantry Regiment during World War I. The regiment was given that nickname when opposing General Robert E. Lee during the American Civil War.

Real people portrayed in The Fighting 69th include Father Francis P. Duffy, the chaplain; battalion commander and future OSS leader "Wild Bill" Donovan; Lt. Oliver Ames, a platoon commander; and then-Sgt. Joyce Kilmer (Jeffrey Lynn), a famous poet, who was killed in battle on July 30, 1918.Most of The Fighting 69th was filmed at Warner Brothers' Calabasas Ranch location, which served as Camp Mills, the regiment's training base, various French villages, and numerous battlefields.