Kyle is a former soldier who after his service in the Pancho Villa Expedition, and then World War I turned mercenary. He sold his services all over the world, first in Mexico to revolutionaries, and then in China to several different warlords. He's now returned to the United States, richer, but not necessarily happier. Usually he can be found in a speakeasy, or sometimes at the train station where he contemplates leaving his country again to go fight in yet another war.