@Tugboater203 lots of great suggestions, but if you like the human soldier (Imperial Guard! Astra Militarum!) - I’m a fan of Gaunts Ghosts. It’s a bit rough in the latter books - you can stop really at Necropolis, which was always one of my favorites. Lots of great moments and really nails why Chaos is the bad guy.
@Tugboater203 lots of great suggestions, but if you like the human soldier (Imperial Guard! Astra Militarum!) - I’m a fan of Gaunts Ghosts. It’s a bit rough in the latter books - you can stop really at Necropolis, which was always one of my favorites. Lots of great moments and really nails why Chaos is the bad guy.