Meanwhile, through all these months the French had maintained the siege of Trichinopoly, feebly indeed but persistently. In September 1751 their battering train had arrived and batteries had been erected before the town, but, like Boscawen's before Pondicherry, at too great a distance to do effectual damage. In fact the French commander, Law, a nephew of the famous Scottish financier, had proved himself both unenterprising and incompetent. The force under his orders comprised the unparalleled number of nine hundred French troops and two thousand Sepoys, over and above the thirty thousand native levies of Chunda Sahib; yet he had effected little or nothing. He was now to be put to a sterner test than the mere blockading of an inferior force under an inactive leader. The supreme command of the expedition for the relief of Trichinopoly was indeed taken from Clive at the last moment, but only to be transferred to Stringer Lawrence, who had just returned from England. Moreover Clive was to accompany Lawrence as a trusted subordinate, so that the change signified only the presence of two officers of conspicuous ability instead of one. Dupleix's instructions to Law were explicit: to leave the least possible number of his troops to continue the blockade of Trichinopoly, and to march out with the rest to intercept the relieving army.

March 17 28 .

On the 28th of March Lawrence started from Fort St. David at the head of four hundred Europeans and eleven hundred Sepoys, together with eight guns and a large convoy of stores. The distance to be traversed was about one hundred and fifty miles, and the way was barred by several rivers. The most important of these was the Coleroon, which a few miles above Trichinopoly parts itself into two branches, the northern branch retaining the name of Coleroon while the southern becomes the Cauvery. It is on the south bank of the Cauvery, and about three miles below the parting of the streams, that Trichinopoly stands. The long narrow strip of land between the two branches is called the island of Seringham, on which, about fifteen miles below and to eastward of Trichinopoly, stood the fort of Coilady, barring the advance of any enemy from that side. About six miles up the river from Coilady the Cauvery splits again into two branches, and it was along the narrow delta between these two branches that the advance of Lawrence must necessarily be made. The ordinary road passed within range of the guns of Coilady across the Cauvery; and Law, assuming that the British would certainly follow it, threw the whole of his intercepting army into the fort. Lawrence, on learning of this disposition, naturally looked for another road, and although, by an error of his guides, the British did come under the fire of Coilady and suffer some loss, yet Law took no advantage of the favourable moment. Lawrence therefore was able to cross the river and to advance on the same evening to within ten miles of Trichinopoly.

On the following day Law took up a position astride of the direct road to Trichinopoly, extending obliquely from the village of Chukleypollam on the south bank of the Cauvery past a rocky eminence known as French Rock, whereon he had mounted cannon, and thence to another almost inaccessible rock called Elimiseram. Lawrence, apprised of these dispositions, made a circuit to southward which carried him outside Elimiseram, and a mile beyond it effected a junction with a detachment of the garrison which had been sent forward to meet him under Captain Dalton. Law now made a feeble and half-hearted attempt at an attack; but the action soon resolved itself into a duel of artillery, from which the French retired with heavy loss, leaving Lawrence to enter Trichinopoly unmolested.

April 1 12 .
April 6 17 .

A few days later Law, taking fright at a threatening movement of the British against some of his native levies, resolved forthwith to withdraw from the south of the Cauvery to the island of Seringham. In such haste did he execute this pusillanimous decision that he abandoned most of his baggage, destroyed vast quantities of stores, and left a small garrison isolated at Elimiseram, which was promptly captured by the British. Clive then proposed to cut matters short by dividing the British forces into two bodies, one to remain to the south of the Cauvery, the other to cross without delay to the north bank of the Coleroon, in order to cut off the supplies of the French and sever their communications with Pondicherry. Lawrence assented, and on the night of the 17th of April four hundred British, seven hundred Sepoys and four thousand Mahratta and Tanjorine horse, together with six field-guns, crossed the Cauvery and Coleroon under Clive himself, and took up a position at Samiaveram, about nine miles north of Seringham, on the road to Pondicherry.

March 30 April 10.
April 15 26 - 16 27 .

Meanwhile Dupleix with unconquerable energy had, on the news of Law's retreat, despatched one hundred and twenty Europeans and four hundred Sepoys to him under M. d'Auteuil. Leaving Pondicherry on the 10th of April, D'Auteuil marched to within fifteen miles of Clive's position at Samiaveram, and resolved to advance from thence by a circuitous route to the Coleroon in order to avoid him. Clive, however, having intercepted one of the messengers sent by D'Auteuil to apprise Law of his intentions, moved out to meet him; whereupon D'Auteuil, learning in turn of Clive's advance, retreated to Uttatoor, while Clive on his side hastened back to Samiaveram. Meanwhile Law, hearing of Clive's departure from Samiaveram but not of his return, sent a force of eighty Europeans, forty of whom were British deserters, and seven hundred Sepoys to attack his camp, as he supposed, during his absence. At midnight of the 26th of April Law's party approached the English encampment. Clive, never dreaming of such enterprise on the part of the French commander, was in bed and asleep. As the French drew nearer they were challenged by a sentry of the British Sepoys; but the officer of the deserters, an Irishman, stepped forward and explained that he was come with a reinforcement from Major Lawrence, and the sentry, hearing the deserters speak English, allowed them, after some hesitation, to pass. The British troops at Samiaveram occupied two pagodas a quarter of a mile apart, and the native troops were encamped around them. The French marched through the heart of the natives' camp and came to the smaller of the two pagodas, near which Clive was sleeping under an open shed in his palanquin. Here they were again challenged. They answered by firing a volley into both pagoda and shed, and then, pressing into the pagoda, put all within it to the sword.

April 16 27 .

Clive, startled out of his sleep, and never doubting but that the fire was the result of a false alarm, ran to the greater pagoda, turned out two hundred of his Europeans and hurried back with them to the shed. Here he found a large body of French Sepoys drawn up before it and firing incessantly at they knew not what, but in the direction of Seringham. Confirmed by this circumstance in the idea that these were his own men, for the darkness obliterated all distinctions of dress, he drew up his Europeans in their rear and ran in among them, rebuking and even striking them for what he supposed to be their panic. For some minutes this absurd position remained unchanged, until one of the Sepoys discovering at last that Clive was a Englishman, attacked him and wounded him in two places with his sword. Clive turned upon him instantly, and the Sepoy finding himself overpowered fled into the pagoda pursued by Clive, who was now in the highest pitch of exasperation over what he conceived to be the mutinous behaviour of one of his own men. To his amazement Clive was accosted at the gate by six Frenchmen; and then at last he was undeceived. With astonishing composure he told them that he was come to offer them terms, and invited them to see his whole army drawn up ready to attack them. Completely deceived by his confidence the French surrendered; and Clive then prepared to attack the Sepoys, but found that they were already withdrawn out of reach of his Europeans. There still remained, however, the larger force of the enemy's Europeans, including the British deserters, which had occupied the greater pagoda. These last refused to surrender, and made so desperate a resistance that at daybreak Clive approached them to open a parley. Owing to weakness from loss of blood he was obliged to lean on the shoulders of two sergeants; but the officer of the deserters, whether through desperation or sheer brutality, at once presented a musket at him and fired. The bullet missed Clive but wounded both of the sergeants to death; whereupon the French soldiers, fearing that their apparent connivance with such an act might debar them from any claim to quarter, immediately laid down their arms. All the Europeans of the enemy's force being now secured, the Mahratta horse was despatched in pursuit of the retreating Sepoys, whom they overtook before they had reached the Coleroon and cut down to a man. Thus for the second time did Clive's marvellous presence of mind not only pluck himself and his troops out of deadly peril, but turn his enemies' devices with terrible retribution upon their own head.