Pilote d'essai
Test pilot Hanna Reitsch carried out a test programme on the two prototypes of the glider version, releasing from its carrier aircraft at altitudes of . Ground launches, using both cable-type catapults and rocket-assisted carriages on rails were also successful. Even with a reduced wingspan the aircraft had a very satisfactory performance, and it was planned to build up to 1,000 for use as disposable bombers to be flown by volunteers from 5/KG200, the so-called Leonidas Squadron.