The brigade, disbanded in March 1919, was reformed in 1939 in the Territorial Army as the 70th Infantry Brigade just before the end of the interwar period, originally as part of the 50th Infantry Division, when the TA was ordered to be doubled in size, due to the increasing likelihood of another war in Europe, most likely with Germany. The brigade was formed as a second-line duplicate of the 151st Infantry Brigade and was composed of the 10th, 11th and 12th Battalions of the Durham Light Infantry, containing many former members of those battalions. The brigade, commanded by Brigadier P. Kirkup, who had commanded the 8th Battalion, DLI during the Great War, was transferred to the 23rd Division, the second-line duplicate of the 50th Division, on 2 October 1939, just under a month after the start of the Second World War. The 23rd Division was commanded by Major-GeneralWilliam Herbert and the 70th Brigade, together with the 69th Infantry Brigade, constituted the division. The brigade, serving with the 23rd Division in Northern Command, was, despite being very poorly trained and equipped, ordered to join the British Expeditionary Force, then serving on the border between France and Belgium, as lines of communication troops under GHQ BEF. The brigade arrived in France on 25 April 1940. Together with the rest of the BEF, the brigade was, under a month after its arrival in France, involved in the Battle of France in May 1940 and the retreat to Dunkirk from where it took part in the Dunkirk evacuation. After escaping from Dunkirk, the brigade, which had sustained some of the highest losses in the BEF, was serving in South East England under Southern Command, when the 23rd Division was disbanded in late June 1940 due to the heavy casualties it had suffered, with the 70th Brigade becoming an independent formation, with the title of 70th Independent Infantry Brigade, on 27 June 1940 and the 187th Field Ambulance, Royal Army Medical Corps under command. The brigade, reformed as a standard infantry brigade on 16 September, was sent to Iceland in October 1940 on garrison duties. The brigade remained there before being sent, in December 1941, to Scotland shortly after the United States entered the war. After serving in South Wales District and Western Command, the 70th Brigade was, on 18 May 1942, assigned to the 49th Infantry Division. The 49th Division, another TA formation, and composed of the 146th and 147th Infantry Brigades and supporting divisional troops, had also been serving in Iceland, where they gained the nickname of "The Polar Bears". The division's General Officer Commanding was Major-General Henry Curtis, but on 30 April 1943 he was replaced by Major-General Evelyn Barker, a distinguished veteran of the Great War. during Operation 'Epsom', 27 June 1944. The brigade, now commanded by Brigadier Percy Paulet King, together with the rest of the 49th Division, spent the remaining two years in the United Kingdom, training for offensive action. In January 1944 Brigadier E. C. Cooke-Collis, who had commanded the 69th Brigade previously, took command. The brigade landed in Normandy on 14 June, eight days after D-Day on 6 June, as part of Battle of Normandysix days later. During Operation Martlet, the preparatory attack for Operation Epsom that took place on 25 June 1944, the brigade was heavily engaged around the village of Rauray with elements from the 12th SS Panzer and 26th SS Panzer Grenadier Regiments of the 12th SS Panzer Division. The 70th Brigade then fought a bloody battle around Rauray as Kampfgruppe Weidinger of 2nd SS Panzer Division counterattacked between 29 June and 1 July. For this it was given the battle honour of 'The Odon' Thereafter it fought south of Tilly-sur-Seulles, before following the 49th Division's initial drive during I Corps' drive to the River Seine in late August. On 19 August, however, the brigade was withdrawn from the front line and the following day all officers and warrant officers in the brigade was informed personally by Major-General "Bubbles" Barker, the division's GOC, that the 70th Brigade was to be disbanded to fill the increasing gap in available infantry replacements. GeneralSir Bernard Montgomery, commanding the 21st Army Group, arrived the day after, saying much the same. At this stage of the war, the British Army was suffering from a severe lack of available manpower, having used up nearly all of its manpower reserves. Most of the men were posted to battalions of the 50th and the 51st Infantry Divisions. By 19 October 1944, the brigade officially ceased to exist. Its place in the 49th Division was taken by the 56th Infantry Brigade, previously an independent formation.
Order of battle
The 70th Infantry Brigade was constituted as follows during the war: