There should be two Fireflies per troop by this stage of the war.
The .50 cal as an AA mount, was usually not mounted on the turret top. Many considered it awkward, plus there really was no need since the allies had control of the skies.
It would take looking at individual regimental armour histories, but according to this map:
http://www.ibiblio.org/hyperwar/UN/C.../OpSumm-13.jpg
4th Canadian Armoured Brigade
21st Armoured Regiment (The Governor General's Foot Guards)
22nd Armoured Regiment (The Canadian Grenadier Guards)
28th Armoured Regiment (The British Columbia Regiment)
5th Canadian Armoured Brigade
2nd Armoured Regiment (Lord Strathcona's Horse (Royal Canadians))
5th Armoured Regiment (8th Princess Louise's (New Brunswick) Hussars)
9th Armoured Regiment (The British Columbia Dragoons)
I don't notice the two armoured brigades on the map, but since a regiment was already mentioned above:
1st Canadian Armoured Brigade
11th Armoured Regiment (The Ontario Regiment)
12th Armoured Regiment (Three Rivers Regiment)
14th Armoured Regiment (The Calgary Regiment)
2nd Canadian Armoured Brigade
6th Armoured Regiment (1st Hussars)
10th Armoured Regiment (The Fort Garry Horse)
27th Armoured Regiment (The
Sherbrooke Fusiliers Regiment)
http://www.flamesofwar.com/Portals/0...g-Normandy.jpg
http://www.canadiansoldiers.com/vehi...ationsigns.htm
http://www.canadiansoldiers.com/vehi...edbrigades.htm
http://www.canadiansoldiers.com/vehi...ticalsigns.htm
regards,
Jack