Aslan/Jill A Mystery of Heroism short story by Stephen Crane

At the end of the story, two young lieutenants spill the bucket of water because they're fooling around.

"The two genial, skylarking young lieutenants were the first to gain possession of it. They played over it in their fashion.

When one tried to drink the other teasingly knocked his elbow. “Don’t, Billie! You’ll make me spill it,” said the one. The other laughed.

Suddenly there was an oath, the thud of wood on the ground, and a swift murmur of astonishment from the ranks. The two lieutenants glared at each other. The bucket lay on the ground empty."