camisade
Cam`i*sade", Cam`i*sa"do, n. Etym: [F. camisade a night attack; cf. It. camiciata. See Camis.] [Obs.] (Mil.) (a) A shirt worn by soldiers over their uniform, in order to be able to recognize one another in a night attack. (b) An attack by surprise by soldiers wearing the camisado. Give them a camisado in night season. Holinshed.