Complex sentence: In her career, which consisted of only a single patrol, serving under 7th U-boat Flotilla from 27 April 1940 to 1 June 1940 for crew training and operationally from 1 June 1940 to her loss on 1 July 1940.
Split into simpler sentences: In her career, which consisted of only a single patrol, serving under 7. Unterseebootsflottille from 27 April 1940 to 1 June 1940 for crew training and operationally from 1 June 1940 to her loss on 1 July 1940.