Napoleon Bunny-Part is a 1956 Warner Bros. Merrie Melodies cartoon, directed by Friz Freleng.
Napoleon is planning a military offensive on a map on his desk and, after Bugs slyly inserts himself into the situation, gets into an argument with him over where the artillery should be placed.
Bugs easily outwits the incompetent guard (who is actually "Mugsy", previously seen in Bugs and Thugs) and causes him to stab Napoleon with a bayonet, resulting in the Emperor launching into a string of (comically imitation) French expletives.
Napoleon asks 'her' to dance and Bugs checks out the juke box and makes a jazzy choice.
At the bottom of the stairs, Mugsy awaits, his bayonet poised to meet Bugs, who jumps off the railing and watches Napoleon slide by and again get stabbed.
Napoleon rushes to Mugsy and orders the guard to sound the alarm because the rabbit has escaped.
as the orderlies drag him off to the nearest insane asylum or "maison d'idiot" ("Sur-r-r-e, you are," one of them nods sarcastically).
He produces a flute and marches off playing "La Marseillaise", which morphs into "Yankee Doodle" as he reaches his rabbit hole.
In 2020 the cartoon was re-released on the Bugs Bunny 80th Anniversary Collection Blu-Ray set this time presented in its original 4:3 aspect ratio.