Who played the impersonator?
I don't remember his name in the film, and there wasn't a photo of him in the cast list.
shareRoss Bagdasarian, aka David Seville of "Alvin and the Chipmunks" fame. His characters name was similar to his own. Sgt. Bagradian.
shareJay Lawrence played Sgt. Bagradian, the POW who impersonated celebrities such as Jimmy Cagney and Cary Grant. His real name was Jay Storch, and he was the younger brother of "F Troop" regular Larry Storch.
Ross Bagdasarian (of "Dave & the Chipmunks" fame) also appeared in the film, but his character was unnamed; he was most prominently featured in the Christmas party sequence crooning the song "I Love You."