Sky Larks is a 1934 animated short produced by Walter Lantz Productions and is part of the Oswald the Lucky Rabbit series.
They pass through the "Milky Way", populated by bottles of milk, and finally crash land on the planet Mars, much of which seems related to the "martial" topic of war.
A variety of animate implements of war then put on a dance, including guns, rockets and gas masks.
While the giant is distracted, Oswald and Dopey rock the salt shaker back and forth until they turn it upside down.
The pair then find that the whole affair was a dream, as they awaken back in the now-empty cinema, with the janitor shaking them awake.