The book series is far more explicitly fascist than warhammer ever could be. Unlike the imperium, the Terran federation started off as a fascist organization and does not possess any of the art or emblems representing human history that war hammer has. There is no inquisition, there is only fascist police officers dressed in parsimonious uniforms. The Terran federation never establishes any diplomacy with any of the aliens it encounters. Unlike how the imperium learned to at least coexist with peaceful aliens, the Terran federation tried obliterating everything it saw. The federation doesn’t even use melee weapons that at least bring historical vibes and art. All you get are bombs, WMDs, and assault rifles.
The bugs are even portrayed in a more biased manner than the other aliens. Anti-Soviet propaganda is everywhere in these books. The bugs are regularly compared to Chinese people. This makes sense given how strong anti-sino sentiment was when this book was written, but my god, the insults get so fucking petty.
Also the first book is one and completely obvious infantry recruitment ad. Like, there is no point in the first book where it tries to discourage the reader from joining the army. It’s the fucking milsim era of shooters all over again but with Cold War era rhetoric.