Complex sentence: In June 1941 "Nelson" was assigned to Force H, operating in the Mediterranean as an escort, on September 27,1941, she was extensively damaged by an "Regia Aeronautica" torpedo strike and was under repair until May 1942.
Split into simpler sentences: In June 1941, "Nelson" was assigned to Force H, operating in the Mediterranean as an escort. On September 27,1941, she was extensively damaged by an "Regia Aeronautica" torpedo strike, and was under repair until May 1942.