http://www.slate.com/blogs/the_vault/2013/11/11/military_slang_terms_used_by_soldiers_in_wwii.html

Cornplaster commando: Infantryman. (Dunlap)

Devil’s piano: Machine gun. (Glossary)

Dit happy: “’Batty’ because of copying too much radio code.” (Dunlap)

Dodo: “A[n Air Force] cadet before he starts flying.” (Shafer)