In the infamous cartoon "Bugs Bunny Nips the Nips," there are scenes where Bugs keeps drawing Japanese flags on trees. Is this a joke that needs more explanation?

by facadesintheday

Scene is at 4:27, and again at 6:50.

https://www.dailymotion.com/video/x20z3qb

RicardoHuch

This is a play on the so called victory tallies fighter pilots put on their planes for every confirmed air victory

https://commons.wikimedia.org/wiki/Category:Victory_tallies?uselang=en