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Here's Mack Sennett WWI all-star spoof feature, basically states-righted by Sennett in March 1919, directed by F. Richard Jones and starring female impersonator Boswell Browne, Ford Sterling as the Kaiser, Malcolm St. Clair, Chester Conklin, Ben Turpin, Charlie Murray, Heinie Conklin, Bobby Dunn, Joseph Belmont, Harry Gribbon, Billy Armstrong, George Gray, and James Finlayson:

https://www.youtube.com/watch?v=ZEzGgRVYVCU

RICHARD M ROBERTS