Quote Originally Posted by Voidhawk View Post
I have always wondered: how exactly do By-The-Codex chapters (such as all those infinite Ultra-clones) manage to win any wars against cany opponents? All their operating proceedures, strategies, and most commonly used tactics are written down in a giant tome that's been passed around more often than Jurgens porn slate!
Bottom line: Because it's used by Space Marines, who are bolt-hard and can individually pacify entire planets, given enough time and a decent supply of resources. Or even less, in the case of some Space Marines such as Brother Cloten of the Blood Angels, who did it naked and bare handed.

The Codex merely encourages them to be well prepared, disciplined, practiced, drilled, loyal and coordinated at the same time.