From Longman Dictionary of Contemporary Englishbattledressbat‧tle‧dress /ˈbætldres/ noun [uncountable] (also battle fatigues [plural] British English) clothes worn by soldiers when they are fighting
Examples from the Corpus
battledress• He was wearing uniform but his battledress jacket was unbuttoned and his tie was loose.• He was in the uniform of a captain in the Green Howards, the ribbon of the Military Cross on his battledress.• There was a soldier in battledress and beret by the door, and he stood aside to let them pass.• He looked very smart as he walked down the street in battledress, his boots shining like glass and his shoulders back.• I pull my battledress jacket over my head in a forlorn attempt to escape from the tiny tormentors; sleep is impossible.• I was not, for once, wearing my battledress trousers, but had put on my uniform skirt with my battledress top. 