If my memory serves me correctly, the two windscreens were slightly angled away from each other so giving the appearance of one missing.
I (think) I am proud to say that I was the very first person in the British Army if not the world to knacker the gearbox selector on a crusader. On the test track at CVD Ashchurch when I could not get it into gear on a corner and gave it a little too much grief:embarrassed:. Probably about '75 or '76