Complex sentence: After roughly seven months of construction, she was launched on 15 June 1940 and formally commissioned into the Kriegsmarine on 10 September 1940 under the command of Kapitänleutnant Georg Schewe.
Split into simpler sentences: After roughly seven months of construction, she was launched in June 1940 and formally commissioned into the Kriegsmarine in September 1940. She was launched on 15 June 1940 and commissioned on 10 September under the command of "Kapitänleutnant" Georg Schewe.