The thing about Anakin giving Ahsoka command over part of the 501st is from a cut story arc from the Clone Wars that was going to lead directly into the beginning of RotS that Dave Filoni talked about at Star Wars Celebration. Basically Ahsoka tracks down Maul and asks for Obi-Wan and Anakin’s help because they’re the only jedi she still trusts and knows they want Maul dead too but they get called away to rescue Palpatine and leave the 501st to help her instead. -minathevampireslayer