Picked this up at the Gamestop sale and while the graphics on the DS version look like mud, the gameplay is well put together and enjoyable.
Squad command is a turn-based, tactical game where you deploy and manuver a squad of Space Marines and, later in the game, their accompanying vehicles and support. Each Marine is allocated a certain amount of action points that are used for movement, firing weapons and other actions. Character position is taken into account during combat as kneeling characters gain cover bonuses and tend to be more accurate while firing.
Now I'm usually all for playing the DS over the PSP, mainly because I believe that better games make a better system, but to be honest the graphics actually do make a differance for me in this case. The touch pad controls never felt as easy to use as the d-pad, there is a very noticable differance in the graphics and the crisper PSP display is much easier on the eyes. However, the constant top screen map display is handy whereas in the PSP version you have to pause in order to access it. Also, while the DS has static displays for it's story elements, the PSP makes use of video, some of which are pretty nice looking.
Both versions are on clearance and are worth picking up. While not as deep as I'd have like, the character advancement is basic and new weapons are doled out every other mission or so, the gameplay is close enough to X-Com to be enjoyable.
Based on this, and the semi-recent release of Blood Bowl, I wonder why the older spin off series aren't leveraged into video game titles? Blood Bowl is a pretty solid game even without the customization of the PC version, Squad Command as well and of course Dawn of War 1 and 2 are excellent RTS games. So why do we not have an amazing Necromunda or Mordheim turn based tactical? Their very nature lends themselves to this type of gameplay and I don't know about you guys but I'd be first in line for a Necromunda game equivalent to Blood Bowl on the Xbox 360 with online multiplayer support!
And the same goes for Battlefleet Gothic and Man O' War! Just put them on DS, pretty please THQ, I'll be your best friend!