There have been a few good military (or partially military) SF series.
BSG (2004),
Space, Above and Beyond, The Expanse. I don't know "Deathtrap", but sounds like it could be like
Space, Above and Beyond.Star Trek is just laughable. Their model for space battles is Napoleonic sailing ships blasting each other with broadsides at arm's length.
BSG is like WWII Pacific War. Only
The Expanse even tries to work out and show realistic weapons and tactics.
If you like this stuff, see
SpaceDock: a Youtube channel that takes space warfare very, very seriously.
Otherwise, there is supposedly a second season of
Altered Carbon coming. If it follows the 2nd book, it would have a lot of military parts, set on a colony planet during a civil war.