A Ergänzungs-Jagdgeschwader (EJG) were Luftwaffe replacement training units which were part of a larger operational Jagdgeschwader. The Germans were sometimes forced to undertake operations and training simultaneously. In 1944, the Luftwaffe formed two of these units, EJG 1 and EJG 2, by combining various training and experimental units. Its commanders included Viktor Bauer and Werner Andres.