the iraqis tried using their then top-of-the-line t72s for a defensive shield in the desert in the 1st gulf war by burying the mbts in the sand with only turrets and guns protuding. not a good idea. uncharacteristically, the americans instead of pressing head on with their m1a1 abrams in a frontal assault stopped dead on their tracks just out of gun range of the t72s. while the iraqis were waiting for the m1s to move en mass into their kill zone, which did not happen, the americans turned all turrets to the rear, pointed guns backwards, picked up their m1s with chinooks and hopped over the iraqi mbt defensive line. when the chinooks landed the m1s in the iraqi rear, there was nothing the iraqi mbts could do as their turrets and guns were hemmed in by piles of compacted sand and sandbags on the sides. all the m1s had to do were to pick sitting duck targets and fire with tanks pointing forward and gun backwards. it was a massacre of t72s. many iraqis abandoned their positions and surrendered. those really unfortunate ones in trenches were buried alive by cevs during mop ups.