For some time, the siege proceeded slowly, the French waiting for the arrival of their siege artillery, by ship, from Pondicherry. The fort of Madras was now a far more formidable post than it had been when the French before captured it. In the year 1743 Mr. Smith, an engineer, had marked out the lines for a considerable increase in the fortifications. The ditch was dug and faced with brick, but on account of the expense, nothing further had been done. The French had added somewhat to the fortifications during their stay there in 1750. Nothing had been done by the English when they recovered the town, until the news of the preparations which the French were making for the siege of the place had been received. Four thousand natives were then set to work; and these, in eighteen months, had completed the fortifications, as designed by Mr. Smith, just before the arrival of the French.

The latter determined to attack from the northern side. Here the fort was protected by a demi-bastion, next to the sea; and by the Royal Bastion, the wall between the two being covered by a work known as the North Ravelin. The defence was also strengthened by the fire of the northwest lunette, and Pigot's Bastion.

Against these the French threw up four batteries. Lally's Battery, erected by the regiment of that name, was on the seashore directly facing the demi-bastion. To its right was the Burying Ground Battery, facing the Royal Bastion. Against the western face of this position the French regiment of Lorraine erected a strong work, while farther round to the west, on a rising ground, they threw up a battery called the Hospital Battery, which kept up a crossfire on the English position.

To prevent the French from pressing forward along the strip of shore between the fort and the sea, the English erected a strong stockade, behind which was a battery called the Fascine Battery.

A few days after the siege began, it was found that the numbers crowded up in the fort could scarcely be accommodated; and the rajah was, therefore, invited to leave by sea, on board a ship which would land him at the Dutch settlement of Negapatam, whence he might journey through the Tanjore country to Trichinopoli. This proposal he willingly accepted, and embarked with his wife, women, and children, his other followers leaving by the land side, opposite to that invested by the French. Thus the garrison were relieved of the embarrassment, and consumption of food, caused by four hundred men and two hundred horse.

Charlie rode, with his troop, without interruption through the country, avoiding all bodies of the enemy until he reached the sea, fifteen miles north of Madras. Here he hired a native boat and, leaving the troops under the command of Ensign Anstey, sailed for Madras; in order to inform the garrison of Forde's victory over the French, and to concert, with the governor, as to the measures which he wished him to carry out to harass the enemy. He was accompanied only by Tim and Hossein.

The wind was fair and, starting an hour before sunset, the boat ran into Madras roads two hours later. The Harlem, which had that day arrived with artillery for the French from Pondicherry, fired at the little craft; and the native boatmen were about to turn the head of the craft northward again. Charlie, however, drew his pistol, and Hossein took his place with his drawn tulwar by the helmsman. The boatmen, thereupon, again continued their course; and, though several shots fell near them, they escaped untouched, and anchored just outside the surf, abreast of the fort.

The English had taken the precaution of erecting a number of huts under the walls of the fort for the boatmen, in order to be able to communicate with any ship arriving, or to send messages in or out. As soon as the boat anchored, a catamaran put out, and brought Charlie and his followers to shore. There was great joy at the receipt of his news, and the guns of the fort fired twenty-one shots towards the enemy, in honor of the victory.

Governor Pigot was in general command of the defence, having under him Colonel Lawrence, in command of the troops. The latter, after inquiring from Charlie the character of the officer he had left in command of his troop, and finding that he was able and energetic, requested Charlie to send orders to him to join either the force under Captain Preston, at Chingalpatt, or that of a native leader, Mahomed Issoof, both of whom were ravaging and destroying the country about Conjeveram, whence the French besieging Madras drew most of their provisions. Charlie himself was requested to remain in the fort, where his experience in sieges would render him of great value.

At daybreak on the 2nd of January, the Lorraine and Lally Batteries opened fire. The English guns, however, proved superior in weight and number, dismounted two of the cannon, and silenced the others. The French mortars continued to throw heavy shell into the fort, and that night most of the European women and children were sent away, in native boats. The French batteries, finding the superiority of the English fire, ceased firing until the 6th, when seven guns and six large mortars from Lally's Battery, and eight guns and two mortars from the Lorraine Battery, opened upon the town.