The British force next moved upon Iskakote, a large village of Ranizai, a dependency of Swat, whither large bodies of hillmen hastened to defend the village and valley. Sir Colin estimated the number of the hostile clansmen to be not less than six thousand. They made a stubborn resistance, and endured a sharp cannonade with great firmness. The Guides and Ghoorkas stormed the nullah with some hand-to-hand fighting, whereupon, having suffered severe loss, the enemy broke up and made for the hills pursued by the cavalry. The Commander-in-Chief interposed no veto on the invasion of Swat, but it became apparent to Sir Colin Campbell that the transport for that operation was inadequate and inefficient. Experience of the opposition he had encountered in the Iskakote affair, and a subsequent reconnaissance in the Ranizai valley, convinced him that his infantry would require a reinforcement of two thousand five hundred men, without receiving which he could not proceed to the invasion of Swat. The Punjaub Board of Administration refused his requisition for the number of troops he asked, and as it was unadvisable to keep the force in the field in the hot weather, the column returned to Peshawur in the beginning of June. Campbell had already been made aware by the Commander-in-Chief of the Governor-General's dissatisfaction, which in the shape of a formal censure awaited him at Peshawur. Lord Dalhousie used expressions which must have cut the old fighting man to the quick. His lordship chose to tell the soldier of many battles that he had manifested "over-cautious reluctance" in advancing against the Swat marauders in March. Presently came the further charge that not only had he "transgressed the bounds of his proper province," but that "he had placed himself in an attitude of direct and proclaimed insubordination to the authority of the Governor-General in Council." Campbell replied with disciplined dignity and self-respect, expressing his regret that expressions so strong should have been used in regard to him, and his painful surprise that after a lifetime of unswerving military subordination he should be accused of the reverse. He was aware that he was in disaccord with the Government, and already when in the field he had determined to resign his command, an intention which he had communicated to the Commander-in-Chief. To that old friend he wrote without heat:--"I have come to the conclusion that I should be wanting in what is due to myself, if, after what has passed, I were to continue in this command; there is a limit at which a man's forbearance ought to stop, and that limit has in my case been reached."