1. 蓝色警戒：2001.Star Wars.Galactic Battlegrounds 星球大战银河战场 | 2001.State of War 蓝色警戒 | 2001.Stronghold 要塞

noun

1. a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply

e.g. war was declared in November but actual fighting did not begin until the following spring

Synonym: war