Hopefully during the final battle at Holy Terra that will no doubt happen eventually, the Alpha Legion guns down the traitors with infiltrators amongst the Chaos Marines and then comes down on them like a tidal wave of ceramite, having secretly been building up their numbers constantly for the past ten thousand years specifically to sweep away all of the Imperium's enemies in one fell swoop galaxy-wide. One interesting possibility is even that most (or at least disturbingly many) Chaos Space Marines may secretly be Alpha Legionnaires waiting for the moment to strike. This becomes a lot more likely when one considers Alpharius may be his legion. Literally. When the Marines say "I am Alpharius", the might be speaking with complete honesty.
==Daily Routines of the Alpha Legion==