When you cast Awaken Undead, remember that affects all undead in a given radius... so stack-em like cordwood. I'm a big fan of allowing the spell to grant them the benefits that come along with being Intelligent Undead (skills and feats). Yeah, yeah, they do not "re-gain" the feats they had in life... but I allow for Awaken Undead to be researched to "program" a specific set of skills and feats. If you want a different set, you research another version of Awaken Undead.
Requiem is a feat from Libris Mortis IIRC... and would allow your undead Bards to affect your undead horde. Toss in the Masterwork wardrums and the different elemental flavors of Dragonfire Inspiration, and your newly formed precussion orchestra can be a bad-arse force multiplier.
archangel.arcanis, it's spelled "Marshal".
I'm pretty sure the bonus is untyped, but the benefit only works on folks with an Intelligence of 3 or more and that understand the marshal's language.