This one also sucks. RNG will make the difference between 2 M60s really close on the left of your T-55s (good!) or 4 M60s in front, far (bad!) and if you are really unlucky it seems you can even get a "bonus" M60 (or even two?) on the hill on the right (really really bad). Combine with Tanks being basically useless against the M113s and the RNG involved in the M113/BRDM machine gun spread...

The initial placement of the number 2 BRDM is just... And it also refuses to do anything but drive straight forward once you switch away. It's extremely helpful to have it drive across the field drawing the M113 fire (and often letting you identify where they are for the arty right after switching to number 1) while you do the work.

Sub 2 definitely possible, but this one is extremely frustrating to do because of the high RNG variance. Having to reset literally 3 seconds in because the number 2 BRDM got knocked out is not very fun. The probability of surviving the opening M113 encounter can be increased to somewhat tolerable levels by opening the unit menu during load, pre-positioning the mouse cursor and immediately holding W+D for just the right amount of time, using the vehicle itself to align the gun. But it's easy to overshoot as well.