For two hours again, beneath a cloudless sky in which the December sun was surprisingly warm, Sharpe exercised Gilliland's men. It was probably, he thought, a waste of all their time for Sharpe doubted if Gilliland would ever need to liaise with infantry in battle, yet there was something about this new weapon that fascinated Sharpe.

Perhaps, he thought as he cleared his thin skirmish line for the fourth time from the front of the battery, it was the mathematics of the rockets. A battery of artillery had six guns, yet it needed a hundred and seventy-two men and a hundred and sixty-four horses to move it and serve it. In battle the battery could deliver twelve shots a minute.

Gilliland had the same number of men and horses, yet at full fire he could deliver ninety missiles in the same minute. He could sustain that rate of fire for a quarter of an hour, firing his full complement of one thousand and four hundred rockets, and no artillery battery could hope to rival that power.

There was another difference, an uncomfortable fact. Ten of the twelve cannon-fired shots would hit their target at five hundred yards. Even at three hundred yards Gilliland was lucky if one rocket in fifty was even close.

For the last time that day Sharpe cleared his skirmish line. Price waved from the far side of the valley. 'Clear, sir! Sharpe looked at Gilliland and shouted. 'Fire! Sharpe's men grinned in anticipation. This time only twelve small rockets would be fired. Each lay in an open-ended trough so that it would skim the ground when it was ignited. The artillerymen touched the fire to the fuses, smoke curled into the quiet air, and then, almost together, the twelve missiles exploded into movement.