Arthur looked towards the boat bridge. There was still a gap of a hundred yards between the anchored boats and the river bank. The last of the vessels still had to be edged into position and then the bridge would have to be laid across the decks. It would be at least another three hours before the first troops could march across the Adour. That meant standing and fighting, or giving the order to abandon the bridgehead until a larger force could be landed by boat to drive the French away. If the north bank of the Adour was lost it might take days to retake it. Arthur saw Colonel Wilson glance back at him, and he composed his face and remained still to give Wilson the chance to make the right decision. There was a pause, then Wilson turned back towards the enemy and ordered his men to advance to where the ground was more open and they would have the space to deploy into a line long enough to bring every musket to bear on the approaching enemy.

No more than ten minutes later the Portuguese skirmishers came trotting back down the road and took up their position at the left of the line. From his position Arthur could see the French skirmishers now, steadily advancing across country until they came within range of the Portuguese line. They had little time to harass Wilson’s men before the rest of the French column came up, marching swiftly. The commander of the leading brigade halted his column and began deploying opposite the Portuguese.

‘This should be interesting,’ Somerset commented. ‘Let’s hope our allies can stand their ground alone.’

‘They will,’ Arthur replied firmly.‘They are seasoned men, as good as our own line infantry. Besides, they are not entirely alone.’ He gestured towards the guns and rockets. A moment later the artillery battery fired its first rounds. The range was short, and the ground wet enough to absorb much of the energy as the solid iron balls struck the earth, kicking up wedges of turf before coming to a stop just short of the enemy. The captain in charge of the battery, Mosse, instructed his crews to increase the elevation and the next shots fell on target, carving their way through the French line.

Arthur turned his attention to the rocket battery. Their launch troughs were supported by a simple iron A frame which could be quickly raised or lowered by means of a sliding bolt to change the angle at which they were fired. The crews had loaded the first rockets and now stood back, the sergeants holding the cords that triggered the flintlock firing mechanisms.

Turning back towards the battle lines Arthur saw that the French had made no attempt to advance yet.

‘What are they waiting for?’ asked Somerset.