sentences:  Lipfert, who held the rank of "Unteroffizier" (sergeant), participated in the Invasion of Poland and in the Battle of France as a member of the 1st Panzer Division.In early 1941, he transferred to the "Luftwaffe" where he trained as a fighter pilot.He was promoted to "Fahnenjunker-Feldwebel" (officer cadet) on 16 June 1942 and to "Leutnant" (second lientenant) on 1 August 1942.