Complex sentence: The AEG C.IV was a German two-seat biplane reconnaissance aircraft, entered into service in 1916 and based on the C.II, but featuring a larger wingspan and an additional forward-firing Spandau-type machine gun.
Split into simpler sentences: The AEG C.IV was a German two-seat biplane reconnaissance aircraft that entered service in 1916. The C.IV was based on the C.II, but featured a larger wingspan and an additional forward-firing Spandau-type machine gun.