"
I'm gettin' corns for my Country
At the Hollywood Canteen
The Hollywood Canteen was a huge night club in Hollywood and the only people allowed in were servicemen in uniform during WWII. The place was staffed by movie stars of all kinds. The actresses and any attractive young women who wanted to would dance with the service men. That is why it refers to "corns" meaning corns that you get on your fight from tight fitting high heeled shoes which women wore while dancing during this time.