"Who Else Will Go?"

"I'm nuts. Cuckoo. Don't you understand? I'm off my rocker. They sent someone else home in my place by mistake. They've got a licensed psychiatrist up at the hospital who examined me, and that was his verdict. I'm really insane."
"So?"
"'So'? Yossarian was puzzled by Doc Daneeka's inability to comprehend. 'Don't you see what that means? Now you can take me off combat duty and send me home. They're not going to send a crazy man out to be killed, are they?'"
"Who else will go?" (315)

Doc Daneeka raises a good point in this passage, if the crazy men are sent home who will fight? Being in a war is already enough to make someone insane, and if these people are sent home, like A. Fortiori was instead of Yossarian, sane people are going to be sent to war to replace the insane, and then become insane.

I believe that wars shouldn't even be started in the first place. But if there is no way out, don't send the people who are in the war back home just because they are mentally affected by it. Everyone who goes to war is mentally affected so if they are replace there will be more and more people going crazy. It is a sad thought but the best is to keep the mentally affected fighting until they die or the war is over.

Yossarian doesn't realize it, but his wish to get out of war has made him insane, and Doc Daneeka is one of the few that realize that they can't be sent home.