 | The Last Watch (The Divide Series #1) J. S. Dewes April 20, 2021 science fiction > military science fiction + space opera |
 | Freehold Defiance (Freehold Universe) Michael Z. Williamson May 4, 2021 science fiction > military science fiction, anthology |
 | Boundless (The Lost Fleet: Outlands #1) Jack Campbell May 18, 2021 science fiction > military science fiction |
 | Governor (Ascent to Empire #1) David Weber, Richard Fox June 1, 2021 science fiction > military science fiction |
 | Frontier Patrick Chiles June 1, 2021 science fiction > military science fiction |
 | A Hole in the World (Burning Sky) Weston Ochse July 6, 2021 science fiction > military science fiction |
 | Hold Fast Through the Fire (NeoG #2) K. B. Wagers July 27, 2021 science fiction > military science fiction |
 | World Breakers Tony Daniel, Christopher Ruocchio August 3, 2021 science fiction > military science fiction, anthology |
 | Citadel (The Palladium Wars #3) Marko Kloos August 10, 2021 science fiction > military science fiction |
 | The Exiled Fleet (The Divide Series #2) J. S. Dewes August 17, 2021 science fiction > military science fiction + space opera |
| The Queen's Assassin (Blood and Fire #2) James Barclay September 16, 2021 science fiction > military science fiction |
 | The Spacetime War Les Johnson October 5, 2021 science fiction > military science fiction |
 | Trinity Dave Bara October 5, 2021 science fiction > military science fiction |
 | To End in Fire (The Crown of Slaves Saga #4) Eric Flint, David Weber October 5, 2021 science fiction > military science fiction |
| A Call to Insurrection (Manticore Ascendant #4) Timothy Zahn, David Weber, Tom Pope 2021 science fiction > military science fiction |
