‘We endured nothing like this in Spain, your grace,’ said Somerset as they watched the bombardment to their right. Even though the French guns were targeting the stretch of the ridge between the two strongpoints of Hougoumont and La Haye Sainte, occasional shot smacked into the slope or whirred through the air close to Arthur and his small party of staff officers. Once there was a dull roar behind them, and Arthur turned to see a column of smoke swirling into the sky from the shattered remains of a handful of ammunition wagons, now ablaze as several dazed figures around the wreckage rose to their feet and staggered away from the flames. Scores more men and horses lay on the ground, unmoving.

‘Lucky shot with a howitzer,’ one of Arthur’s aides muttered.

‘Lucky?’ Somerset snorted.

The officers turned their attention back to the furious bombardment. It seemed to Arthur as if it had reached a climax. He turned to look at the men of the nearest regiment, one of those composed of new recruits fresh from their training battalion in England. There was no mistaking the fear in their expressions. Arthur knew that they had to be moved back, before their spirit failed.

‘Somerset, pass the word. The centre of the line will retire a hundred paces.’

‘A hundred paces? Yes, your grace.’

The aide spurred his horse away and conveyed the order to every unit defending the ground under fire from the French guns. One by one the battalions stood up and formed ranks before turning about and pacing back down the reverse slope, out of sight of the French gunners. Within quarter of an hour the only men still visible to the enemy were the gun crews. Some of the batteries, overcome by the exasperation of enduring losses without responding, ignored Wellington’s order not to engage in counter-battery fire and had started to blaze away.

There was no time to ride over to the gunners and berate them, as at that moment Arthur realised that the enemy bombardment was slackening. The last few guns fired and then the French crews reloaded their guns and closed up to them to create as much space between each gun as possible. The reason for this was at once obvious to Arthur, who spurred his horse forward, down the reverse slope towards the infantry regiments sheltering there.

‘Prepare to receive cavalry! Infantry will form square!’