Previously these had been in a combined Tyne and Tees Brigade with battalions of the Northumberland Fusiliers.

[2][3] Consisting of 6th–9th Battalions (the 5th Bn joined the York and Durham Brigade), it became part of the TF's Northumbrian Division.

[4] The TF also raised 2nd Line units and formations, and the 190th (2nd Durham Light Infantry) Brigade was formed in 63rd (2nd Northumbrian) Division.

The 1st Line battalions adopted the prefix '1/'[5] The brigade's composition during World War I was as follows:[4][6][7] After the Third Battle of the Aisne, the 50th Division was reduced to training cadres.

The 151st Brigade was then reconstituted with battalions withdrawn from Salonika, giving it the following composition:[4][6][7] After the Armistice with Germany, 50th Division was disbanded in France on 19 March 1919.