In 1939 this brigade was reformed, as the 27th Infantry Brigade, in the Territorial Army as part of the 9th (Highland) Infantry Division, a 2nd Line duplicate of the 51st (Highland) Infantry Division. When the 51st (Highland) Division surrendered during the Battle of France in June 1940 the 9th (Highland) Division was redesignated as a new 51st Division. Due to this the 27th Infantry Brigade became the 153rd Infantry Brigade and served with the 51st (Highland) Division in North Africa, Sicily, Italy, and North-West Europe from 1942 to 1945.