Does that first truck of the three photos have a Chevrolet bowtie emblem on the top of the radiator ??
Canadian Military Pattern Vehicles (CMP) – www.captainstevens.com https://truck-encyclopedia.com/ww2/canada/Canadian-Military-Pattern-truck.php Over the 410,000 CMP trucks "made in Canada" GM trucks alone represented 201,000, Ford making the rest, with 4x4, 3-ton trucks (Chevrolet C60S and C60L, Ford F60S and F60L) being the majority (209,000). Chrysler delivered 180,000 Dodge trucks, and again 3/4 were 3-ton trucks. But they differed from the CMP pattern, as having the standard Dodge control cabins, 2-in (50 mm) longer wheelbases and two-wheel drive. 9,500 more extra 4x4 CMP ch***is were also reverved for conversion into armoured cars.
'Army men of the 7th Division as they prepare for and march through the streets of Brisbane, Queensland' - State Library of Victoria