Men at War

1 The Last Heroes (1985)
     aka In The Line of Duty
2 The Secret Warriors (1985)
     aka Covert Operations
3 The Soldier Spies (1986)
     aka Give Me Liberty
4 The Fighting Agents (1988)
     aka Into Enemy Hands
5 The Saboteurs (2006) (with William E Butterworth IV)
6 The Double Agents (2007) (with William E Butterworth IV)
7 The Spymasters (2012) (with William E Butterworth IV)
8 The Devil's Weapons (2022) (with Peter Kirsanow)
9 Zero Option (2024) (with Peter Kirsanow)