B Hut Picture A B-Hut is an abbreviation for "Barracks Hut". The British Army commonly used the term "Barracks Hut" to refer to temporary billets for military personnel as far back as the 1800s.The term "Barrack" means: A building or group of buildings used to house military personnel. Often used in the plural. e.g. Barracks. The definition of "Hut" is a temporary structure for sheltering troops. Barracks Hut was almost always used when referring to cheaply made temporary shelter or housing. Since the US invasion of Afghanistan, the abbreviated term "B-Hut" has become a common term for US soldiers and contractors alike. The B-Hut is much more common in Afghanistan than Iraq due to the lack of infrastructure, building materials (besides mud) and of permanent buildings, by western standards.