The most eerie aspect of this clip is how the characters resemble something out of Chuck Jones' The Dover Boys (1942) (John McLeish even doing a voice), and both cartoons came out within a few months of each other. We know Jones was moonlighting with the UPA guys for Hell-Bent for Election (1944), but was he also doing some work on these Screen Gems shorts?
You can watch this great cartoon (minus the bit with the ghost as Hitler shooting himself... Hmm, guess they predicted the future...) at Pietro's great site.