War being resolved on, Marlborough and Eugene met at Tournay on the 28th April, and commenced the campaign by the capture of the fort of Mortagne, which capitulated on the same day. Their force already amounted to sixty thousand men, and, as the troops were daily coming up from their cantonments, it was expected soon to amount to double the number. The plan of operations was soon settled between these two great men; no difference of opinion ever occurred between them, no jealousy ever marred their co-operations. They determined to commence serious operations by attacking Douay--a strong fortress, and one of the last of the first order which, in that quarter, guarded the French territory. To succeed in this, however, it was necessary to pass the French lines, which were of great strength, and were guarded by Marshal Montesquieu at the head of forty battalions and twenty squadrons. Douay itself also was strongly protected both by art and nature. On the one side lay the Haine and the Scarpe; in the centre was the canal of Douay; on the other hand were the lines of La Bassie, which had been strengthened with additional works since the close of the campaign. Marlborough was very sanguine of success, as the French force was not yet collected, and he was considerably superior in number; and he wrote to Godolphin on the same night--"The orders are given for marching this night, so that I hope my next will give you an account of our being in Artois."[6] The Duke operated at once by both wings. On the one wing he detached the Prince of Wirtemberg, with fifteen thousand men, by Pont-a-Tessin to Pont-a-Vendin, where the French lines met the Dyle and the canal of Douay; while Prince Eugene moved forward Count Fels, with a considerable corps, towards Pont Auby on the same canal. The whole army followed in two columns, the right commanded by Eugene, and the left by Marlborough. The English general secured the passage at Pont-a-Vendin without resistance; and Eugene, though baffled at Pont Auby, succeeded in passing the canal at Sant and Courieres without serious loss. The first defences were thus forced; and that night the two wings, having formed a junction, lay on their arms in the plain of Lens, while Montesquieu precipitately retired behind the Scarpe, in the neighbourhood of Vitry. Next morning the troops, overjoyed at their success, continued their advance. Marlborough sent forward General Cadogan, at the head of the English troops, to Pont-a-Rache, to circumscribe the garrison of Douay, on the canal of Marchiennes on the north; while Eugene, encamping on the other side of the Scarpe, completed the investment on the west. The perfect success of this enterprise without any loss was matter of equal surprise and joy to the Duke, who wrote to the Duchess in the highest strain of satisfaction at his bloodless triumph. It was entirely owing to the suddenness and secresy of his movements, which took the enemy