A scene between Benjamin Franklin 'Hawkeye' Pierce and Father Mulcahy, both wearing surgical masks, from the 20th episode of season 5 with the title 'The General's Practitioner' with the following conversation:
Hawkeye: War isn't hell. War is war and hell is hell, and of the two, war is a lot worse.
Father Mulcahy: How do you figure that, Hawkeye?
Hawkeye: Easy, Father. Tell me, who goes to Hell?
Father Mulcahy: Sinners, I believe.
Hawkeye: Exactly. There are no innocent bystanders in Hell, but war is chock full of them: Little kids, cripples, old ladies. In fact, except for a few of the top brass, almost everybody involved is an innocent bystander.