Fighting is one of the few things that allow him to hold onto his sanity. It's not something he can let go of, at this point.

"Second Battle of Geonosis. We didn't know how close we were to the real danger the first time." Which said something because how many times has she ever known him to bring up Geonosis that wasn't him screaming in a nightmare?

"Stay close, I'll get us to higher ground." A cave, he thinks. Even a shallow one, would be more defensible and protect her.