So, since I'm taking the "renegade guard" to OFCC in two weeks, I figured I probably should get around to basing them and putting squad markings on 'em. Most of the units don't need anything, they're different enough (1 unit of these, 1 unit of those). The problem comes in with the 4 units of Penal Legion and the Infantry Platoon (with Special Weapons Squads). So, what I did was give all the 'legion prison tats on their right arms, and then the infantry platoon got squad markings (roman numerals I and II for the squads, diagonal slashes for the special weapons squad and a + for the command squad.
I'm still trying to figure out what to do for the bases. I think I just may cheat and use sand, paint, and static grass... but really, it's because I can't think of anything else.