Arthur enlisted in Tring into the Bedfordshire Regiment (No 31663). Later transferred to the 16/RIR a pioneer battalion. Killed in action at the start of the German offensive Operation Michel.
War Diary of 16th Bn Royal Irish Rifles:
21st March - Battle. Nos 2 & 3 Coys. concentrated to west of SOMME dug-outs. N.W. GRAND SERACOURT. The entire of No 1 Coy. consisting of 9 officers and O.R failed to appear at above rendezvous, having apparently been cut off at JEANNE D'ARC were subsequently posted as missing.
3pm - Orders received from C.R.E for two Coys. to start construction of a track for artillery near ST SIMON. No 2 & 3 Coys started on this work.