Just to clarify for everyone who isn't already aware, there IS NO CONTRADICTION between the Dawn of War deployment rules and the Chaos Daemon's 'Daemonic Assault' rule.

'Dawn of War' (p93 of the rulebook) says:

"He can then deploy up to two units from his Troops selections and up to one unit from his HQ selections in his half of the table. . ."

and:

"All units that were not deployed, and were not declared to be in reserve during deployment, must enter the game in the Movement phase of their first player turn by moving in from their own table edge, just like units moving in from reserve."


'Daemonic Assault' (p27 of the Daemons codex) says:

"No model in this army is ever placed on the battlefield during deployment. Instead, all of the units in the army always start the game in reserve, even in missions that do not normally allow this rule to be used."


So, as you can see from the Dawn of War rules, the extra units you aren't able to deploy come onto the table on the first turn, but this is different from units you place into reserve, which come in using the normal rules for reserves (typically starting on turn 2).

The Daemon Codex forces the player to put everything he has into Reserves, which is actually something any army can choose to do if they want (in which case other armies start rolling for their Reserves on turn 2).

Of course the Daemons also have a special rule about how their Reserves arrive, which they naturally continue to follow.