Sons of Heaven

Millions were dead.
Millions more would join them.

The Rangers step back into the bloodiest civil war in history all at the orders of a man they'd rather see dead. Somewhere in an empire tearing itself to bloody shreds lies a secret worth killing and dying for. Lee, Chaz, Jimbo and the rest are willing to do the former and struggling like hell to avoid the latter.

The fifth book in the epic Bad Times series by Chuck Dixon.

Military action in a time travel scenario that blends realistic action ...