Just before D-Day the British Army started issuing a new design of steel helmet, the Mk III. This helmet, sometime nicknamed the ‘turtle helmet’ on account of its shape, was modified at the very end of the war and was to see service, as the Mk IV, throughout the Korean War. The helmet, painted at the factory in black, has a deep shape coming down over the sides of the head and neck:The main differences between the Mk IV and the Mk III were the use of a ‘lift the dot’ fastener for the liner so it could be removed to allow the helmet to carry water, and the repositioning of the sling attachments to be much closer to the rim of the helmet:Sadly the liner on my example is damaged and missing the rubber pad at the crown:This example has also lost the distinctive lift the dot fastener and the liner is held in with a simple nut and bolt. The size is adjustable through a cord threaded between each piece of the rexine liner:The liner is dated 1952 and marked ‘FFL’:This stands for ‘Fisher Foil Ltd’ a maker of helmet liners during the Second World War. The helmets were used until the 1970s when replaced with an essentially identical version, with an updated liner. The Mk IV was used throughout the Korean War and can often been seen with a helmet net covering it:At the time they were introduced the Mk III and Mk IV helmet were a major advance over the WW1 style Tommy helmet that offered protection from overhead shrapnel, but left the sides and back of the head exposed. The Mk IV was to be a particularly long lived helmet, being used alongside the Mk V until the introduction of the modern Mk 6 ballistic nylon helmet in 1985. Various attachments can be found for the helmet including a transparent visor to turn it into a riot helmet for Northern Ireland and a battery powered torch that could clip onto the rim for use at night.