To bring up the rear means to move last in a group of people.
Context: "Besides, I can do a lot more damage with a sheath of arrows than she can with two axes, so I'm the best one to follow behind." Claim: "Besides, I can do a lot more damage with a sheath of arrows than she can with two axes, so I'm the best one to bring up the rear."
Considering the context, is the claim true, false, or unknown?