M*A*S*H - Season 3 Episode 14
Private Charles Lamb

A Greek Colonel thanks the 4077th by giving them food and drink for an Easter celebration. But the feast is foiled when softhearted Radar saves the main course from the spit - a lamb, which Radar tricks Henry into giving a medical discharge and sends home to Ottumwa, Iowa. Thus, Hawkeye and Trapper invent the famed Spam Lamb! Meanwhile, a soldier who had shot himself to get out of the army confesses to Frank, thinking he is Father Mulcahy.