- Series: Captain's Crucible Series Record # 41820
- Sub-series of: Isaac Hooke's Military SF Universe
- Series Tags: military sf (5), aliens (1)
- 4 Captain's Crucible
- 1 Flagship (2016) by Isaac Hooke
- 2 Test of Mettle (2016) by Isaac Hooke
- 3 Cradle of War (2016) by Isaac Hooke
- 4 Planet Killer (2016) by Isaac Hooke
- 5 Worlds at War (2017) by Isaac Hooke