The C.IV was based on the AEG C.II, but featured a larger wingspan and an additional forward-firing Spandau-type 7.92 mm.312 in machine gun. In addition to reconnaissance duties, the C.IV was used as a bomber escort, despite proving itself inadequately powered for the role. Nevertheless, the C.IV was easily the most successful of AEGs World War I B- and C-type reconnaissance aircraft, with some 687 being built and the model remained in service right up to the end of the war.

Option C. IV.N was designed specifically as a prototype night bomber In 1917, with the Benz BZ.III engine used in other types and extended wings. Another option, of S. Willow, was equipped with a 130 kW 180 HP Argus as III engine degree.

C. IV aircraft saw the weapons of the Bulgarian air force on 1 machine, and the Turkish air force 46 machines.

A large number 91 C. IVS were captured by Poland in 1919, most in poznań during the greater Poland uprising. Most of them were assembled and entered service. He became one of the main aircraft of the Polish air force, used for reconnaissance, bombing and shelling during the Polish-Soviet war 1919-1920. Most were withdrawn in 1921.