I'm beginning to wonder if we have the correct Charles Squire enlisting in WW2 under surname of SquireS.
https://nominal-rolls.dva.gov.au/veteran?id=408001&c=WW2The WW2 enlistment has the "S" added and different NoK That chap enlisted at Hay NSW on 03 Jul 1942, giving "TOOGUMBIE" as his residence; There is a "Toogimbie Station" near(ish!) to Hay.
There are many Charles Squire/s listed in Victoria/NSW - some even in Mortlake as Charles SQUIRES at the same time as Charles SQUIRE.
These entries seem to me to be for the Charles we're searching for:
Electoral rolls
all
Charles SQUIRE in Mortlake, Vic:
1924, 1931, 1936, 1937
at Shadwell Park, Mortlake, farmer
with Minnie Squire, hd
In 1935 he was to pay 543pounds to add an extra 41 acres to land he already had in Mortlake. On this document he signs to say that he will be able to work this extra land (with what he already had) profitably.
There are a number of entries in Sands Directory - the most recent that I saw:
Victorian Directory (Sands) 1942
Charles Squire, farmer, Mortlake
If he's still listed in Mortlake in 1942 it seems unlikely that he would be enlisting in Hay in the same year - however, Sands directories aren't always accurate.
I came across this one as well but it's in NSW (nearish to Hay), perhaps he's the one enlisting in 1942.
1919 Squire, Charles, Rock Grove, Darlington station hand
Edit to add:
Birth registration which fits date of WW2 enlistment and also age given in WW1 papers:
Judith