in a war, if people are killed or injured by friendly fire, they are hit by a bomb or weapon that is fired by their own side 误杀，误伤（战争中由己方或友军造成的死伤） Several soldiers were killed in friendly fire due a mistake by allied forces. 由于友军的失误，数名士兵在友军大火中丧生。
Oxford Collocations DictionaryFriendly fire is used before these nouns:- incident