After the French defeat the Germans converted modèle 37 ammunition to serve as sub-munitions for their AB 70-D1 cluster bombs. The ammunition was given a new tail fin and these sub-munitions were given the German classification SD 1 FRZ. Another German conversion was the Behelfsmine W-1 which consisted of removing the nose fuze and tail fins then adding a Buck chemical crush fuze to the projectile and using it either as a small anti-personnel mine or as a booby trap.
