[1] The Reich Air Ministry ordered the aircraft to replace the Junkers Ju 88 and Dornier Do 217 bombers by 1943.

The engines were positioned in a unique twin-boom arrangement connected only through the wing assembly, a configuration which offered the crew better visibility.

The fuselage extended forwards beyond the engines, with the gunners situated behind the cockpit, ahead of the bomb bay and wing spars.

Otherwise an innovative design, these powerful engines were selected because they would have allowed the Arado E.340 to carry the required payload of 5,900 kg (13,000 lb) within a relatively compact airframe, despite their still-strictly developmental nature.

Ultimately, the entire Bomber B project was cancelled, primarily as a result of the failure to develop the required engines.