Name the term used to describe military aircraft designed primarily for air-to-air combat against other aircraft, an example being the Albatros Dr.II, a German prototype single-seat triplane, fitted with twin machine guns?
Albatros Dr.II: The Albatros Dr.II was a German prototype single-seat fighter triplane, the sole example of which flew in the spring of 1918. Albatros Dr.II:  It was similar in many respects to the D.X biplane, employing among other features the same 145 kW (195 hp) Benz Bz.IIIbo engine and twin 7.92 mm (.312 in) machine guns. Fighter aircraft: A fighter aircraft is a military aircraft designed primarily for air-to-air combat against other aircraft, as opposed to bombers and attack aircraft, whose main mission is to attack ground targets.
fighter aircraft