Just remember only to use this tactic IF the enemy is going to get close to you. In our game you used it when you were in no danger of being assaulted, so all it did was let me heavy bolter your fire warrior teams.
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Dark Angels 1750 win/loss Record
Win - 23 (Belial helped wreck Ryan's puny Eldar)
Loss - 13 (Brice's Necrons wiped me)
Draw - 2 (The 13th hold out in alpha take and hold)