Fighting Above and Below
U.S. Army Signal Corps photo, dated December 25, 1944

Alerted GI's of an M51 antiaircraft machine gun battery are silhouetted against a sky streaked with vapor trails from Allied and enemy planes engaged in a dogfight. The battery is waiting to fire on an incoming enemy plane making a strafing run on their position. It's Christmas Day, and the weather has finally cleared, allowing the Allied air forces to go to work over the Ardennes in support of the American counter-attack.

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