Hey, I've got some of these that I wanted to decipher as well. Thanks for reminding me.
I've got a similar situation (in regards to not understanding why ranks change). On one line (all of these are during qualifying for different driver and mechanic things, as well as entries about which trades pay group and such), he's at the rank of Pte in Dec. 43. The next two lines have the rank of L/Cpl, dated in Aug 1944. Following this is another entry at the rank of Pte, dated Sep 44. Then, at the rank of Tpr., there are few entries dated Feb/March/April 45. There a few more entries, then an entry that says "Relinquishes rank of L/Cpl - to draw 1.50" which is dated for 31 Jan 45. I'm just not sure of whats going on with that little L/Cpl bit, and why he'd choose or be forced to relinquish that rank, or whatever did actually happen.
Unfortunately the next section of these records isn't legible. There is one entry in particular which says U.K., and another, I think I can make out "NWE". I've got a couple guesses, but I'm not sure what that stands for, anybody?. This illegible section would seem to be the part he was overseas, but that seems to be rectified on the next page, where the gap is filled in (including a barely legible section about going overseas), but I'm not sure... Maybe a correction or something, because everything else is arranged chronologically?. There seems to be a TOS from CACTR (swapping between #2 and #3, but I'm not sure what CACTR is?), then there's SOS to 8 Cdn Recce Regt (14 Ch), and then SOS to 14 CAR DM MVC (Driver Mechanic, Motor Vehicle group "C" I'm guessing?), which is June and August of 1945. I'm assuming that it was normal for this trade to be moved around as needed? Thats just where I can start reading it again, and immediately after that he embarks NWE (in October of 1945), Disembarked UK, then SOS Cdn Army O/S (which is?). After that, he's SOS to 138 T/C Sortation back in Calgary. Then some other stuff which I think I understand, it mostly seems to be post war stuff, and posting to RCEME (why a change in his unit for the couple of months, back in Canada, while he appears to be going through the process of discharging?). I think I've got a good idea of everything but the few questions I asked.
Also, for Place, some of the typed entries say "do". I assume that means its the same as the entry above it ("ditto"?) but thats a guess.
Anyways, I'll stop there, because I was typing as I was reading, and its probably hard enough to sort out what I'm trying to relay here.