 As part of this brigade, the battalion served with the 80th Infantry (Reserve) Division and later the 38th Infantry (Reserve) Division.Both the 9th and 10th battalions were formed in late August 1939, the 9th as a 2nd Line duplicate of the 7th Battalion, and the 10th a duplicate of the 8th.The 9th Battalion, formed from many former members of the 7th Battalion, was assigned to the 182nd Infantry Brigade, alongside the 2/7th and 9th battalions of the Royal Warwickshire Regiment, part of the 61st Infantry Division and remained in the United Kingdom throughout the war, as training battalions to supply drafts of replacements for battalions of other regiments overseas.