Cool article on the subject of baseball and the Civil War.
Sometimes, games would be interrupted by the call of battle. George Putnam, a Union soldier humorously wrote of a game that was "called-early" due to the surprise attack on their camp by Confederate infantry:
Suddenly there was a scattering of fire, which three outfielders caught the brunt; the centerfield was hit and was captured, left and right field managed to get back to our lines. The attack...was repelled without serious difficulty, but we had lost not only our centerfield, but...the only baseball in Alexandria, Texas.