'Tell the men to keep quiet, and then get them formed up!'

'Yes, sir.'The sergeant moved off amongst the dark mass, hissing orders as he went.

Napoleon crunched up the steep beach towards the lamp. He called out as loudly as he dared. 'Lieutenant Alessi.'

'Sir! Here!'With a clatter of shells and loose shingle the figure at the lamp came forward. Alessi had landed the day before from a Corsican fishing boat. He had used the time to scout the approaches to the fort and then prepared his landing signal as night fell. A fellow Jacobin, he saluted as he came up to Napoleon.

'Is the route to the fort marked out?'

'Yes, sir.'

'Any trouble?'

'No. The enemy are tucked up in their barracks for the night, sir.' Napoleon could see a faint gleam as Alessi grinned. 'They've posted four sentries that I could see. They seem to spend most of their time in the turrets on the wall. Can't say I blame them on a night like this.'

Napoleon nodded. That was why they had chosen a date before the new moon appeared. His only worry now was that the Sardinians might see the ship that had carried the battalion from Ajaccio. Napoleon turned and squinted out to sea. Only the faintest patch of denser darkness indicated the frigate, La Gloire, anchored offshore where the other four companies of the battalion were waiting to be ferried ashore. The frigate's boats were already heading back for them as the first two companies began to form up on the shore a short distance above the waterline. In addition to the men of the battalion a disassembled six-pounder was to be landed with the ammunition and powder needed for the assault on the fort. If the attack succeeded then a pair of eighteen-pounder long guns would be brought ashore and mounted in the fort. Once that was done the guns could command the waters of the strait around the island, and begin bombardment of the fortlet on the coast of Caprera.

Colonel Colonna remained aboard the frigate to oversee the operation, with Colonel Quenza acting as his aide-de-camp. Napoleon felt a huge sense of relief that he had landed with the first wave of troops and had escaped the dead hand of his superiors. His relief was mixed with excitement about the prospect of the attack itself.

He leaned forward to pat Alessi on the shoulder. 'You've done a fine job. Find someone to look after the lantern and then you can return to your company. I want them in position as soon as possible out of sight of the fort, but ready to move up the moment the attack begins.'

'Yes, sir.' Alessi saluted and scrabbled down the shingle to find the grenadier company – the first to be landed. Napoleon stood, arms clasped around his thin chest and shivering, as he waited for the boats to return with the next wave of troops.The six-pounder would be coming ashore with them and Napoleon would command the party that moved the gun up into position to fire on the fort. A short time after the second company followed the grenadiers off the beach, the dark shapes of the boats heaved up into the surf and more men splashed into the water. Napoleon made his way down to the shoreline and looked for the boat carrying the gun and its accessories.

'Sir! Over here.' A figure in the surf waved to him and Napoleon recognised the voice of the Swiss officer who had been ordered to accompany the gun borrowed from the citadel at Ajaccio. For a moment Napoleon wondered if this was the man responsible for shelling the Jacobin Club. He hoped so – that had been a fine display of gunnery. He smiled to himself as he mused how shifting fortunes made strange bedfellows, and then waded over to the boat Lieutenant Steiner was holding on to.

'Let's get moving. Powder and shot first.'

The men assigned to the gun crew carried the ammunition ashore and then returned to the boat for the gun carriage, iron-rimmed wheels and lastly the brass cannon itself; an unwieldy and heavy lump of metal that had been wrapped in a boarding net. With ten men straining at the rope handles, it was carried through the waves and dumped on the shingle with a collective grunt of relief. The men hurriedly assembled the gun just as the last soldiers to reach the beach shuffled off to join the rest of the battalion.Then, with the gun crew taking up the traces, Napoleon gave the order to begin hauling the gun up the beach and on to the narrow track that wound over the headland towards the fort. The men carrying the small powder barrels and nets of iron balls followed. It was exhausting going and Napoleon was obliged to rest the men regularly. With dawn approaching, he resented these necessary delays, and when they moved forward again he took his turn at the traces.The strenuous work soon warmed his body and the trembling stopped as he gasped for breath between clenched teeth as the wheels of the gun ground over the loose stones along the path.

As they approached the crest of the headland, Napoleon handed command over to Steiner and ran ahead. The first faint smudge of grey was lightening the eastern horizon and he had to be sure that all was ready for the attack. The path flattened out, and through a thin screen of pine trees he could see the silhouette of the fort. The grenadier company had crept forward and was now lying still in the shadows of the wall, either side of the gate. The rest of the men had moved to within two hundred paces of the wall and waited amongst the rocks and undergrowth. There was no sign of alarm from the fort. Napoleon nodded with satisfaction and turned back down the path.

The sky was a pale rosy pink by the time the gun had been positioned amongst the trees, three hundred paces from the gateway.The fort looked old and neglected, and Napoleon hoped that the timber of the gate was as badly maintained as the rest of the defences. The gun stood on a flat patch of ground, and the rocks had been cleared from the recoil area.The powder and balls were stacked to one side and the gun crew had loaded the weapon and stood by as Napoleon carefully sighted it, adjusted the elevation and blew gently on the portfire until it glowed. He stood back from the gun carriage and extended his arm so that the portfire was hovering just above the firing tube protruding from the vent. Napoleon paused, savouring the thrill of excitement as he realised that he had only to lower the portfire to send six hundred men into action. He took a breath and eased his arm down.

The detonation of the powder charge came an instant after the first fizz from the firing tube. A bright orange tongue of flame roared from the end of the muzzle as the carriage jumped back. At once the view of the fort was shrouded by smoke, and Napoleon leaped to one side to watch the fall of shot. A chunk of masonry exploded off the wall, above and to the right of the gate. Lieutenant Steiner called out the orders to reload the gun in a steady calm voice and Napoleon instructed him, 'Down and left, then fire at will.'

'Yes, sir.'

Leaving Steiner to it, Napoleon hurried to join the rest of the battalion. At the sound of the first shot they had risen from the ground and moved forward either side of the path to keep clear of their cannon shot's trajectory. There was another explosion from behind Napoleon and a shrill moan as the cannon ball passed over head. He glanced up just in time to see the shot strike the top of the gate, smashing in the timbers and leaving a jagged gap the size of a cooking pot.

Napoleon hurried forward to join Alessi and his grenadiers. Both men drew their swords and stared at the fort. Two of the sentries were peering over the wall and the sound of a bugle rang out in the cold air. Alessi pointed to the sentries.

'First section! Open fire!'

A quick rattle of musket fire chipped fragments of masonry from the wall and the head of one of the sentries suddenly dissolved in a spray of blood and brains.The grenadiers cheered at the sight. Then another cannon ball roared by and struck the gate dead centre, crashing through the timbers and shattering the locking bar behind.With a grinding creak the gates swung inwards.