war-path

war-path
n (idm 习语) (be/go) on the `war-path (infml 口) ready for a fight or a quarrel; hostile or angry 准备作战或打架; 敌对; 发怒
    Look out the boss is on the war-path again! 当心点--老板又发火了!

牛津英汉双解词典