>>1: Where do the 105 mm Shermans fit in, and what "mark" would they be?
The Shermans were usually doled out to the Squadrons, I seem to remember, two per Sqdn, for a total of 6 per regiment. As said above, they were M4 (105) or Sherman IBs.
>>2: Would a Canadian Regiment be the equivalent of a German Abteilung? (Panzers in Normandy Then and Now, Eric Lefèvre, pages 8-17)
An Abteilung, was a batallion, so yes, each field "Regiment" was equivalent to a batallion.
Technically speaking, each Canadian combat regiment was really the 1st Batallion, Such & Such regiment, in a similar manner to the other Brit Regiments which could have many, many Batallions formed under the same regimental banner, a practice that is still maintained today. In the Canadian armed forces there are currently 3 active service infantry regiments, The PPCLI, the RCR & the Vandoos, but each has 3 batallions.
This is unlike the American system, where there are always only three batallions in each regiment and the three batallions of one regiment always serve together much like a Brigade. Commonwealth batallions are plonked together irrespective of home regiment. So you get Brigades with different regiments in them. In a UK Brigade, you could have 5 Bttn Border's with 2 Bttn Fife & Forfar Yeomany & 3 Bttn Inniskillin's. In Canada, in WW 2, we only fielded the 1st Bttn of each of our regiments so it looked as if each brigade was made up of three entire regiemnts. Any 2nd Bttns were always either in Canda as replacement depots or in England as replacement depots.
>>3: What kind, and how many support vehicles would an Armoured Regt. have?
It has and had many support vehs. Take a look at the Armoured Acorn site to see a lot of OrBats (Orders of Battle, the equivalent of a TO&E)
http://armouredacorn.com/orbatsmain.htmlThese Orbats changes constantly over time as the war progressed & equipment & combat tasking changed.
>>4: What does the "C" in Sherman IC, or VC Firefly mean?
17 pdr gun.
HTH
Paul