A batch of a six G.IIs (factory designation GZ2) was ordered by the Inspectorate of Flying Troops ( () on 1 April 1915 before the G.I even began its combat trials. It required the use of water-cooled
Benz Bz.III straight-six piston engines, an armament of a single machine gun, a bomb load of and of armor plate with thicknesses ranging from for the forward gunner. The crew was to consist of two men, although it was to be equipped with three seats. was very concerned about the G.II's ability to fly on a single engine, so AEG lengthened the steel-tube
fuselage and enlarged the
vertical stabilizer and
rudder accordingly. The aircraft was expected to be used in the battleplane () or aerial cruiser role escorting bombers or
reconnaissance aircraft and engaging enemy aircraft. Another batch of a dozen was ordered on 6 May, also before the results of the G.I's combat trials were known. AEG's measures to insure adequate stability when flying on a single engine proved inadequate so the aircraft from the first batch received a variety of modifications to address the issue. Most had the
tail structure modified with the existing vertical stabilizer and rudder enlarged and/or two additional rudders were mounted on the
horizontal stabilizers. Some had the blunt armored nose replaced by a more streamlined unarmored one. Aircraft of the second and succeeding batches incorporated these changes as built. Two more batches totaling 18 aircraft were ordered in September, but only three or four of the last batch of a dozen were actually delivered. The highest number of G.IIs on the front-line strength report was 13 in December 1915 and remained in front-line service through June 1917. ==Specifications (AEG G.II)==