very eager to do something dangerous or violent (gonghe, from jongguo gongye hozo she , used as a battle cry (meaning "work together") by U.S. soldiers in World War II)
If you say that someone is gung ho, you mean that they are very enthusiastic or eager to do something, for example to fight in a battle. He has warned some of his more gung ho generals about the consequences of an invasion Senate Republicans are less gung-ho about tax cuts