Bugs Bunny Nips the Nips (1944)
Bugs lands on a Japanese-held island. He tries to outsmart one Japanese soldier by dressing as Emperor Hirohito, but the soldier isn’t fooled. He recognizes Bugs from his Warner Brothers films produced by Leon Schlesinger. Bugs has trouble with a tough sumo wrestler but is able to outwit him by dressing as a geisha. Bugs finally rids the island of Japanese by driving up in his ice cream truck (which plays music from The Magic Flute!) and selling each one an ice cream with a secret grenade surprise.