For the love of all the gods, the IG background needs something that people will actually use. Very few people will using carrying capacity in their games, which makes the imperial guard's ability absolutely worthless.
The Imperial Guard should have an ability that fits the horrors of war that he has faced. Maybe something tactical to coordinate the group similar to the Rogue Trader's ability; or perhaps something that hardens him to the horrors of battle and gives a bonus to resist fear and other mental traumas which can kill one during an engagement. Maybe allow him to help the rest of the group resist those things, giving him a clear role as a battlefield leader among the group.
Any other ideas or comments we can share with FF on how to improve this background?