The 11th (Service) Battalion (Cambridgeshire) of the Suffolk Regiment was part of the 101st Brigade in the 34th Division. He was given the Regimental Number 13594 when he was posted to the 11th Battalion of the Regiment.
They had moved up from Becourt Wood in the early morning of the 1st July 1916 behind the 10th Battalion of the Lincolns. Mines to the front and to the left were exploded at 7.28am (Lochnager Crater). The men were cut down within moments of leaving their assembly positions and casualties were heavy. The Battalion lost 691 men out of about 900 in four days. "Men spun round and dropped everywhere" said one survivor.
Arthur was initially reported as missing but later as killed in action at Albert.