The 2/4th and 2/5th battalions were both raised in September 1914 from the few men of the 4th and 5th battalions who did not volunteer for Imperial Service overseas when asked. Therefore, Territorial units were split into 1st Line units, which were liable to serve overseas, and 2nd Line units, which were intended to act as a reserve for the 1st Line serving overseas. To distinguish them, all battalions adopted the '1/' or '2/' prefix (1/4th Norfolks as a 1st Line unit, 2/4th Norfolks as a 2nd Line unit). The 2/4th and 2/5th were part of the 2nd Norfolk and Suffolk Brigade, 2nd East Anglian Division, later, in August 1915, they became 208th (2/1st Norfolk and Suffolk) Brigade, 69th (2nd East Anglian) Division. However, both battalions were disbanded in 1918: the 2/4th in June and the 2/5th in May. The 2/6th (Cyclist) Battalion, formed in October 1914 as a duplicate of the 1/6th (Cyclist) Battalion, had much the same history as the 1/6th Battalion and remained in the United Kingdom until May 1918 when it was disbanded.