The German gas was of sufficient concentration to penetrate Filling the British PH gas helmets and the 16th Division was unjustly blamed Judgment_communication for poor gas discipline .

It was put out Communication that the gas helmets of the division were of inferior manufacture , to allay Cause_change_of_position_on_a_scale doubts as to the effectiveness of the helmet .

By April 1916 , British troops had PH helmets and some specialist troops like machine-gunners , were equipped Supply with box respirators .

The officers , part of a special operation to suppress violence and rampant crime in Borno State , demanded Request that the young men comply with a law requiring motorcycle passengers to wear helmets .