Warhammer 40k: Squad Command review at Gamespot.

"Certain types of games just don't easily mesh with handheld systems. A good case in point is the turn-based tactical simulation, which is awfully tricky to pull off successfully without a mouse on which to fall back. Warhammer 40,000: Squad Command could have been a contender if it had only come out on a platform better able to host this style of game. Control limitations of the Sony PSP and some design miscues make this a near miss most appreciated by Warhammer fans too hot for the license to notice any of the game's problems."

Full Source: Gamespot