This, the first full history of the Battalion, covers early recruiting for the battalion in the Swansea area and its subsequent training in Swansea, Rhyl and Winchester, prior to departure, some 1,200 strong, in December 1915 for the Western Front. As part of the 38th Welsh Division it participated in the attack on Mametz Wood on the Somme where, in a single day, it suffered almost 100 men killed and 300 wounded.