Psychoneurotics ?
"Nuts," said the colonel. "Somebody has thought up a new two-bit word for being yellow."
Brigadier General Elliot D. Cooke, visiting a forward command post in North Africa, eyed the colonel thoughtfully. As he was to discover before he finished his Army-wide inquiry, the colonel had pretty well summed up the attitude of many U.S. combat officers in World War II.
General Cooke, a hardened soldier himself, started with much the same idea ("I didn't know enough about psychoneurosis to find the word in a dictionary"). But his assignment from General Marshall was...