On the 30th of August, 1748, Admiral Boscawen went and laid siege to Pondicherry; stopped at the outset by the fort of Ariocapang, of the existence of which they were ignorant, the disembarked troops could not push their trenches beyond an impassable morass which protected the town.
The fire of the siege-artillery scarcely reached the ramparts; the sallies of the besieged intercepted the communications between the camp and the squadron, which, on its side, was bombarding the walls of Pondicherry without any serious result.

Dupleix himself commanded the French batteries; on the 6th of October he was wounded, and his place on the ramparts was taken by Madame Dupleix, seconded by her future son-in-law, M.de Bussy-Castelnau, Dupleix's military lieutenant, animated by the same zeal for the greatness of France.

The fire of the English redoubled; but there was laughter in Pondicherry, for the balls did not carry so far; and on the 20th of October, after forty days' siege, Admiral Boscawen put to sea again, driven far away from the coasts by the same tempests which, two years before, had compelled La Bourdonnais to quit Madras.

Twice had Dupleix been served in his designs by the winds of autumn.

The peace of Aix-la-Chapelle came to put an end to open war between the Europeans; at the French establishments in the Indies the Te Deum was sung; Dupleix alone was gloomy, despite the riband of St.Louis and the title of marquis, recently granted him by King Louis XV: he had been obliged to restore Madras to the English.
War soon recommenced, in the name, and apparently to the profit, of the Hindoo princes.