WWII BRODIE HELMET OR TOMMY HAT Mk 2, 1940's

The Brodie Helmet, was a steel combat helmet designed and patented in 1915 by John L. Brodie.

Colloquially, it was also called the shrapnel helmet or Tommy helmet, and in the United States known as a doughboy helmet.
It is closely related to the French Adrian helmet. This helmet the Mk2 was first produced in 1940, made of hardened manganese Steel.

Your comments:

• I have one of these helmets with a St.Johns Ambulance symbol on the
  front. Not sure if this was used in combat or of what WW it came from
  any information would be helpful
  .......... Jean Shura, St.Catharines Ontario Canada, 11th of December 2011
  
  

A0410