During the recent freshet near Petersburg: The Soldiers’ Journal, October 5, 1864, page 267

During the recent freshet near Petersburg, when a portion of the Federal fortifications was submerged and several soldiers were drowned, one man, while struggling in the water, cried out:

“I’m Captain Semmes! where’s the Deerhound?”

That was as cool and self-possessed as Mercutio, who died with a joke on his lips.