Dawn of War II/Heavy Support

Heavy Support
Game	Dawn of War II
Description	Reach level 20 with one of your squads in Dawn of War II. Not applicable to guests.
Gamerscore	10

Heavy Support is a Games for Windows – LIVE achievement worth 10G in Dawn of War II.

Getting it

If you play through the entire campaign, there is just no way the squads you use would not reach level 20.