The Home Counties (Kent) Heavy Battery, Royal Garrison Artillery, was a unit of Britain's part-time Territorial Force formed in 1908 from elements of an existing volunteer artillery unit in Kent. It fought on the Western Front during World War I, in the Attack on the Gommecourt Salient, at the Battles of the Somme and Passchendaele. During the German Spring Offensive of March 1918, the battery was caught up in the 'Great Retreat', saving its guns but losing the rest of its equipment. It then participated in the Allies victorious Hundred Days Offensive, including the battles of Albert, Bapaume, Cambrai and the Selle. It was merged into a medium artillery (later anti-aircraft) unit in the postwar Territorial Army.