Formed at Bedford in June 1915 but soon moved to Windsor Great Park.
In October 1915 moved to Halton Park near Tring.
8 April 1916 : became 5th Reserve Battalion.
Merged with with 1st Reserve Bn, the Hertfordshire Regiment on 11 July 1917.
Moved to Crowborough in Autumn 1917 and by August 1918 was at Hastings.