Henry Montgomery Clark

My Great-Uncle, Henry Montgomery Clark, served in World War Two along with three of his brothers, David James, Leonard Rupert and Russell Nicholas.  All were in different units and I have been told 3 served in the Middle East, and found themselves in the siege of Tobruk.  Originally I has been told all 4 brothers served un Tobruk, but have since been corrected - beware the inaccurate family story!  While I knew about their WW2 military service I was surprised to find that Henry also served in the Militia during the 1930s - something I discovered while searching family records on Recordsearch at the National Archives of Australia.  Below is his enlistent form in the militia in 1934.