The division remained in East Anglia, digging trenches, manning coastal defences. and training, until July 1916, when it moved to Salisbury Plain for final training. By then the artillery had received their 18-pounders and 4.5-inch howitzers. As with the other TF artillery, the brigade was assigned a number and 2/II London became CCXCI Brigade (291 Brigade). The batteries were redesignated A-C, a howitzer battery was added and became D Battery, and the brigade ammunition columns were abolished. The division began embarking for France on 20 January 1917 and by early February it was on the Western Front, where it remained for the rest of the war.