If you don't have the achievement for beating the training level, then beat it before SPGing.<br />
1.) Pull out your internet cord from Xbox 360. <br />
2.) Remove HDD and delete all Call of Duty 2 saves from MU.<br />
3.) Sign into source profile and load up game.<br />
4.) Select mission D-Day: The Silo... select EASY.<br />
5.) SPG as the level is loading.<br />
6.) You will get booted, then go to Mission Select, and if all the levels are completed on Veteran then you did it right! <br />
7.) Then just play whatever levels you need on EASY to earn the achievements!