Had these been all served by European artillerymen, the British force would have been speedily annihilated as they stood. The natives of India, however, were extremely clumsy gunners. They fired but slowly, and had the feeblest idea of elevation. Consequently their balls, for the most part, went far over the heads of the English; and the four field guns of Saint Frais did more execution than the fifty heavy pieces of the nabob. At the end of half an hour, however, Clive had lost thirty of his men, and determined to fall back to the mango grove.

Leaving a party in the hunting box, and in the brick kilns in front of it, in which the guns had been posted, to harass Saint Frais' battery with their musketry fire, he withdrew the rest of his force into the grove. Here they were in shelter, for it was surrounded by a high and thick bank. Behind this the men sat down, while parties set to work, piercing holes through the banks as embrasures for the guns.

The enemy, on the retreat of the British within the grove, advanced with loud shouts of triumph; and, bringing their guns closer, again opened fire. The British had, by this time, pierced the holes for their field pieces; and these opened so vigorously that several of the enemy's cannon were disabled, numbers of their gunners killed, and some ammunition waggons blown up. On the other hand the English, now in perfect shelter, did not suffer at all, although the tops of the trees were cut off, in all directions, by the storm of cannon balls which swept through them.

Although the English fire was producing considerable loss among the enemy, this was as nothing in comparison to his enormous numbers; and, at eleven o'clock, Clive summoned his principal officers around him; and it was agreed that, as Meer Jaffier and his associates, of whose position in the field they were ignorant, showed no signs of drawing off, or of treachery to their master, it was impossible to risk an attack upon the front; since they would, as they pressed forward, be enveloped by the forces in the rear. It was determined, therefore, that unless any unexpected circumstance occurred, they should hold their present position till nightfall; and should, at midnight, attack the enemy's camp.

A quarter of an hour later, a tremendous tropical shower commenced, and for an hour the rain came down in torrents. Gradually the enemy's fire slackened. The English had tarpaulins to cover their ammunition, which, therefore, suffered no injury. The natives had no such coverings, and their powder was soon completely wetted, by the deluge of rain. Mir Mudin Khan, knowing that his own guns had been rendered useless, believed that those of the English were in a similar condition; and, leading out his cavalry, made a splendid charge down upon the grove.

The English were in readiness. As the cavalry swept up, a flash of fire ran from a thousand muskets, from the top of the embankments; while each of the field guns sent its load of grapeshot, through the embrasures, into the throng of horsemen.

The effect was decisive. The cavalry recoiled before the terrible fire, and rode back, with their brave leader mortally wounded. This blow was fatal to the fortunes of Suraja Dowlah. When the news of the death of his brave and faithful general reached him, he was struck with terror. He had long suspected Meer Jaffier of treachery, but he had now no one else to rely upon. Sending for that general he reminded him, in touching terms, of the benefits which he had received at the hands of his father; and conjured him to be faithful to him. Throwing his turban upon the ground, he said:

"Jaffier, you must defend that turban."

Jaffier responded with assurances of his loyalty and sincerity, and promised to defend his sovereign with his life. Then, riding off, he at once despatched a messenger to Clive, informing him of what had happened, and urging him to attack at once.

As long as Mir Mudin Khan lived, it is probable that Meer Jaffier was still undecided as to the part he should play. While that general lived it was possible, even probable, that the English would be defeated, even should the traitors take no part against them. His death, however, left the whole management of affairs in the hands of the three conspirators, and their course was now plain.