A friend is reading "Last Train from Atlanta" by A.A. Hoeling and sent me along this story. It is an account by Captain Joseph G. Vale of the 7th Pennsylvania Cavalry and I had never heard of this before . It's about his troopers coming under heavy fire while trying to cross the Chattahoochee . "The brigade , in fact the whole division, was armed with the Spencer repeating rifle and carbine, using a metallic waterproof cartridge. The river was very rocky , and in many places channels between the rocks were found to be overhead in depth . As the Rebel bullets began to splash around pretty thick , the boys sought to keep in this deep water with only the head exposed ; they soon discovered that they could throw cartridges from the magazine into the chamber of the piece , by working the lever as well underwater as in the air; hence all along the line you could see men bring their guns up , let the water run from the muzzle a moment , then taking aim , fire his piece and pop down again with only his head exposed .Now , the Rebels had never seen anything of this kind before , nor , for that matter , had we , and their astonishment knew no bounds ."