War in the Air War in the Air Air Warfare Images This gallery contains an array of images relating to the use of aircraft in warfare. Air Warfare in the News This gallery contains headlines about air raids, air battles and the like. Aerial Surveillance Images Photos taken from Observers in kite balloons and other aircraft during WWI. Observation Balloons This gallery contains images kite balloons in action on the Western Front. War Aces This album contains galleries of photos of Canadian War Aces Billy Bishop and Billy Barker as well as a gallery devoted to the infamous German War Ace, the Red Baron. Air Warfare Videos Video clips regarding the waging of war in the air. Air Warfare Documents Documents about the introduction of airplanes to the waging of war.