McCredie joined the NCR at 16. He has been stationed at Camp Golf since it was the front line between the NCR and the Legion. He is upset with the misfits under his command, and set on whipping them in to shape if it kills him, or them.
Flags of Our Foul-Ups: McCredie is the misfits' CO and as such he wants them to become an effective unit, but he needs some external help.
No, Not Much: As part of the quest, the misfits have to be trained better so aid can be sent to Bitter Springs. Following Flags of Our Foul-Ups, McCredie is comfortable with the misfits enough that aid can be sent to Bitter Springs.