According to Felix's Utter Top Secret Battle Plan, the Algerians would thrust their right forward in a feint to the Moroccan left, while quickly bringing up the bulk of their light armor behind the screen of the hills on the enemy right. The Moroccan strategy was to sit tight in defensive entrenchments until the enemy intention became clear, then launch a drive straight down the valley, with a second column poised to take the Algerians in the flank as soon as they struck from cover at the Moroccan flank. It seemed like a nice, conventional exercise, and I felt sure the boys would enjoy it a lot.

The Algerian ballistic shells were making vivid puffs high above the valley now, followed by laggard thumps of sound, as the Moroccan antiballistic artillery made their interceptions. At each flash, the details of the battlefield below blinked into momentary clarity; it was an almost steady flickering, like heat lightning on a summer evening.

I turned up my binocular magnification, scanned the distant Algerian massing area for signs of their main column moving out. They were a minute or two ahead of schedule. The churn of dust was just beginning to rise above the lead element; then antidust equipment went into operation and the cloud dissipated. Now I could pick out the tiny pinpoints of running lights, coming swiftly around in the shelter of the distant hills to form the arrowhead of the Algerian attack.

I lifted myself another hundred feet, jetted toward their route of advance. They were coming up fast-risking accidents in the dark-to beat the best time the Moroccans would have estimated was possible. I arrived over the cut through which they would turn to make their dash for the oasis, just as the lead tank rounded into it-a massive Bolo Mark II, now running without lights. The Moroccans, caught in the trap of overconfidence in their intelligence analysis, still showed no signs of recognizing the danger. The first squad of four Algerian combat units was through the pass, gunning out into the open.