The brigade, disbanded in March 1919, was reformed in 1939 in the Territorial Army (or TA, the British Army's part-time reserve component) as the 70th Infantry Brigade just before the end of the interwar period, originally as part of the 50th (Northumbrian) 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 (DLI), containing many former members of those battalions.
The brigade, dissolved in March 1919, was reconstituted in 1939 in the Territorial Army (or TA, the British Army's part-time reserve component) as the 70th Infantry Brigade at the end of the interwar period, originally as part of the 50th (Northumbrian) Infantry Division, when the TA was expanded to double its size due to the growing threat of another war in Europe, most likely with Germany. The brigade was formed as a duplicate of the 151st Infantry Brigade and consisted of the 10th, 11th, and 12th Battalions of the Durham Light Infantry (DLI), comprising many former members of those battalions.