A friend is starting into 40k and he decided on Deathwatch as his first army. He was at the game store without me... Just starting into the marine world myself I am looking for any advice people might have to help with building a Deathwatch list that is semi competitive and how list building works. Can he include a devastator squad in his list? Devastators aren't listed on the kill teams and I only glanced through his codex supplement, but I assume so. I told him I assumed all marines could be included in his list, but if he wanted to make kill teams then that was Deathwatch's cool tactic. Also, are kill teams troops, elites, etc? I do not know how to classify them in list building. I guess I could have consulted battlescribe, but haven't yet. Any help would be appreciated.