Rally Cry (Lost Regiment)
The first in a series on a unit of Civil War soldiers transported to another planet where previous generations of humans from around the world and throughout history are fighting against an alien race who uses them for food.  But this unit is the first to arrive with gunpowder and "modern" organization and fighting techniques - and they won't be such easy prey.
Science Fiction, Civil War Fiction, Aliens, Fiction, general
William R. Forstchen, Patrick Lawlor
William R. Forstchen (born October 11, 1950) is an American historian and author. A Professor of History and Faculty Fellow at Montreat College, in Montreat, North Carolina, he received his doctorate from Purdue University.

He has published numerous popular novels and non-fiction works about military and alternative history, thrillers, and speculative events. His three alternate novels of the Civil War were co-written with politician Newt Gingrich; two also had the participation of writer Albert S. Hanser. He and the other two men have also written three novels about General George Washington during the American Revolutionary War.