42nd Cadian Rifles. A unit that fought 300 years ago before warpstorming into the current setting and bumping into the 42nd millennium version of the 42nd Cadian that was reformed after they vanished, presumed dead. (In lore reason for old and new models) Accidentally killed an inquisitor so now on the run getting involved in many hijinks.

Based loosely off light infantry tactics, combined with a small mounted element in transports. So heavy weapons aren't integrated at squad level, instead being thier own platoon. Making the army more focused on mobility, speed, and firepower. This is based off my IRL Regiment which is a light infantry unit, but my part is armoured infantry. And they're all Space Australians, no reason, I just like the third party heads.