Hello All,
Instead of starting a new thread and to avoid hijacking Chris's Lend Lease Chevrolet 1.5 thread I will post some photographs of Australian Army Trucks with one piece top pivoting hinged windscreens. 
I am not sure from the angle the attached photograph taken from the Australian War Memorial's Collection - however it looks like a CMP with a one piece windscreen. Comments welcome it could be the two split screens are  just both open at the same time?
Kind Regards
Lionel
Here is the AWM's description...
ID number 	079821
Object type 	Black & white
Physical description 	Black & white
Collection 	Photograph
Description
TOKO, BOUGAINVILLE, SOLOMON ISLANDS. 1945-03-21. A 3 TON TRUCK OF THE 7TH INFANTRY BRIGADE POSITIONED PRECARIOUSLY AFTER ITS ENGINE STALLED DURING UNLOADING OPERATIONS IN HEAVY SURF.
Accessed 13th September 2013
Permalink: 
http://www.awm.gov.au/collection/079821