Slouch hat, worn by Sgt T C Waterman, 33rd Signal Regiment, Royal Corps of Signals, 1944 (c).

Khaki wool felt, made by Failsworth Hats Ltd, 1942

Slouch hats were first used during the South African War (1899-1902) and formally adopted as part of service dress in 1902. They were discontinued in 1905. It was retained for use in West Africa and its use was extended in 1943 when it was issued to troops in tropical areas. 

Regimental distinctions were permitted. This example has a section of regimental pattern ribbon added to the side.