Operation Flashpoint, 1985
There was this mission where I tagged along with an engineer to lay AT mines on a road somewhere. Then the two of us had to lay in wait for a Russian armor column to roll through and hit our mines. Our job from there was to mop up anything that survived. OFP AI being as it is, when the tanks rolled in my commander took it upon himself to fire a LAW at point blank range into the side of a passing tank. The resulting blast blew us both to shreds and the mission was a failure. Mandatory retry -- or IRL terms, a white headstone inscribed with my service branch, name and rank at the hometown cemetery. "Here lies krashkart, blasted to bits by dumb AI..."