Complex sentence: From 9 November 1941 he served as the commander of the Escadrille A of the 316 Squadron, and from 25 September 1942, as the commander of the No.315 Polish Fighter Squadron.
Split into simpler sentences: From 9 November 1941 he served as the commander of the Escadrille A of the 316 Squadron. From 25 September 1942 he was back on the frontlines, as the commander of the No.315 Polish Fighter Squadron.