Somerset watched his general closely for a moment, noting how sunken his eyes looked and how exhausted he appeared. The cold, miserable weather of the past weeks and the mud and depressing landscape of Burgos had added to his burden and for the first time Somerset began to wonder how one man could endure the strain of command for so long. The campaign had begun at the start of the year and now, ten months on, the officers and men were clearly exhausted and their morale was low. If they were close to the end of their tether, then by what greater order of magnitude was Wellington close to the end of his? Only one man could have led the army to achieve all it had in the Peninsula, and looking on that man now, Somerset feared for himself, and for the whole army, far from a home some had not seen for years.

‘Sir?’ he asked quietly. ‘Shall I order you something to eat? Sir?’

There was no reply, just a deep, even breathing. Somerset smiled fondly, then rose to his feet and fed a few more logs into the campaign stove. After a moment’s hesitation he picked up the mud-stained cloak lying across one of the chests in the tent and carefully draped it over Wellington’s body.

‘Good night, sir,’ he said softly, and left the tent.

Four days later, the French attacked the sappers again, bursting into their works between the walls in the early hours. They killed the engineers who were cutting a small tunnel through the rock beneath the second wall; the men charged with protecting them had put up a short fight before fleeing back towards the breach. There they had encountered Major Somers-Cocks, barring their path. He was attempting to rally them and counter-attack the enemy’s raiding party when he was shot through the heart. His men’s spirit broke and they fled back down the trenches, leaving the enemy to seize yet more tools before they set a small charge in the mouth of the mine and blew it up, burying the entrance under tons of rock.

Later, when the first report of the attack reached headquarters, Arthur read through the details and then lowered the document, his face ashen as he turned to address Somerset. ‘Somers-Cocks is dead.’ Then he walked slowly outside to stare at the fortress where the tricolour flag was flying defiantly above the keep.