Unfortunately I can't access page 19 in the preview, but I believe it to be incorrect. Why? Because Her Majesty herself corrected me on this point - and believe me you do not forget being told you have made a mistake by your Queen!
OK, I have just managed to access the page through another route. I can certainly believe she learned to drive the K2 as it says at 1 Mechanical Training Centre but that was where she trained. She became a supply driver after completing training.
I read that too. The Queen has my utmost respect for her service and dedication to the troops.