Complex sentence: The East German M-56 helmet was originally designed in 1942 as a replacement for the M1935/M1940 model Stahlhelmsinitially developed for the Wehrmacht by Prof. Dr.-Ing. Fry and his collaborator Dr. Hansel from the Institute for Defense Technical Materials Science in Berlin.
Split into simpler sentences: The East German M-56 helmet was originally designed in 1942 as a replacement for the M1935/M1940 model Stahlhelms. It was initially developed for the Wehrmacht by Prof. Dr.-Ing. Fry and his collaborator Dr. Hansel from the Institute for Defense Technical Materials Science in Berlin.