Arthur Valentine Cohen Born Victoria Australia a I F

Arthur Valentine Cohen was the son of Arthur Valentine Cohen and Amelia Victoria Johnson. His parents married in Victoria in 1894 reg#1978

Arthur Valentine Cohen enlisted in the First World War (service number 34A)in the A.I.F

He went AWOL in England and was living unmarried with a girl who claimed to be Beatrice Baillea Hamilton, born Stanmore, Sydney, New South Wales. (there are two children)

His War Service Record is 155 pages.

I am looking for any information on Arthur Valentine Cohen and what happened to this family.

This is his fathers death notice;
3rd March 1928 p.17 The Argus
COHEN. -On the 2nd March at his residence, 22 Rusden street Elsternwick Arthur Valentine Cohen (late 5th Battalion A.I.F.), beloved husband of Amelia, and loved father of Arthur, Albert, Aubrey, and Silvia, aged 58 years.