BLUE ON BLUE


Meaning of BLUE ON BLUE in English

ˌblue on ˈblue BrE AmE adjective

used to describe an occasion during a battle or a war when a soldier, sailor, or pilot is accidentally killed by their own army:

a ‘Blue on Blue’ incident which saw an RAF jet brought down by a Patriot missile

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.