Ha ha! Lt. Fuzz is an idiot!
No, this doesn't fit with any of his prior characterization, but the gag was so funny Mort Walker Inc. just couldn't pass it up. Nor could they use Zero, a character specifically designed for this sort "Ha ha, he's stupid!" gag, because, um, they want to maintain the illusion that Camp Swampy functions like a real military camp? Or something?