PLEASANTVILLE, NYReader's Digest editors reported Monday that submissions to their 'Humor In Uniform' feature have fallen off sharply since 2001. 'The submissions that are trickling in are just not making me laugh,' said Jackie Leo, an editor at the magazine. 'I'm looking for amusing send-ups of peeling potatoes on KP duty, not another vignette about a soldier waking up screaming because he accidentally shot a pregnant Iraqi woman.' Leo said she almost published one soldier's story about being financially devastated by shrinking veteran benefits 'just to help him out with the $300 publication fee, but it just wasn't funny enough.' 