The Modèle 1951 helmet was a military helmet used by the French military (Army, Navy, Air Force and Gendarmerie), iconic of the Algerian War.
The Modèle 1951 was designed to have the same general shape as the US M1 Helmet, in an effort towards standardisation within NATO.
The two differ in that the M1 has a longer visor and a more pronounced downwards slope on the sides.
The Modèle 1951 comprised a heavy external cover, made of 1.2 mm of an amagnetic alloy of manganese steel, and a lighter inner helmet.
It nonetheless remained in service well into the 1980s.