Correct. As I wrote above, it was effected when they came under command of 7 Armd Div in October 1940. During Op Compass, squadrons were task organised in and out of 2RTR depending upon need. My earlier split of A10/A13 above may be inaccurate as I have assumed RHQ had A10 and the 3 sqns were uniform. Juggle the numbers if you believe differently. Please note there were no A13CS. What is interesting to note from a tactical point of view is that, post-BEF experience, Home Forces decided the 'mixed' regiment didn't work. Yet, as soon as the now 'non-mixed' regiments arrived in Egypt, 7 Armd Div mixed them up again.