A still greater misfortune followed. Lawrence himself fell dangerously ill, and it was not until after weeks of anxiety, by which time the army could hardly hold its ground for want of supplies, that there came at last a gleam of hope for the British. A convoy of stores being expected, Captain Caillaud was sent southward on the night of the 23rd of May with one hundred and twenty Europeans, five hundred Sepoys, and two guns to escort it into camp. The French having gained intelligence beforehand of this movement, despatched double that number of trained troops and guns, together with four thousand picked Mysorean horse, to occupy the position which Caillaud had designed for himself and to lie there in wait for him. Fortunately Caillaud made timely discovery of their whereabouts and decided to attack them forthwith, which he did with success, driving them from a tank in which they were posted and occupying it himself. Not until the day broke did he realise the odds against which he had fought in the darkness and the numbers by which he was still menaced; but fortunately the sound of the firing had been heard in Trichinopoly, and Captain Polier, who commanded during Lawrence's illness, at once started with every man that could be spared to Caillaud's assistance. A French force started at the same time with him to intercept him; but Polier out-marching it, effected his junction with Caillaud without mishap. The British force thus united amounted to but three hundred and sixty Europeans and fifteen hundred Sepoys, with five guns: the task that lay before it was to fight its way back over the plain against seven hundred Europeans, five thousand Sepoys, and ten thousand horse, of which last fortunately none were Mahrattas. Forming two sides of a square the little force marched, not without loss but without serious molestation, over a mile of the plain to a second tank; and here the enemy closed round it, the Sepoys and cavalry on three sides and the French battalion on the fourth. But when the French advanced to the attack they were met by a fire of grape which in a few minutes laid a hundred of them on the ground and so staggered the rest that they wavered and halted. "Never, I believe," says Lawrence, "were two field-pieces better served than these." Caillaud, who was again in command owing to the disabling of Polier by two wounds, seized the moment to make a counter-attack, and the British poured in so deadly a volley of musketry that the French gave way and fled. Their officers exerted themselves to the utmost to rally them, but they would not stop until they were beyond range of cannon, nor even then would they return to the attack. After this there was little impediment to Caillaud's retreat. The loss of the French amounted to five hundred killed and wounded, of whom two hundred were Europeans; that of the British slightly exceeded two hundred, of whom rather more than a third were Europeans. Thus the much-needed convoy was brought