British M44 (MK III) WW2 original steel helmet

The Mk III Helmet is a steel military combat helmet that was first developed for the British Army in 1941 by the Medical Research Council. First worn in combat by British and Canadian troops on D-Day, the Mk III and Mk IV were used alongside the Brodie helmet for the remainder of the Second World War. It is sometimes referred to as the "turtle" helmet by collectors, because of its vague resemblance to a turtle shell, as well as the 1944 pattern helmet.