Before the concentration at Ferozepore had been completed, Lord Auckland received official intimation of the retreat of the Persians from before Herat. With their departure had gone, also, the sole legitimate object of the expedition; there remained but a project of wanton aggression and usurpation. The Russo-Persian failure at Herat was scarcely calculated to maintain in the astute and practical Afghans any hope of fulfilment of the promises which the western powers had thrown about so lavishly, while it made clear that, for some time at least to come, the Persians would not be found dancing again to Russian fiddling. The abandonment of the siege of Herat rendered the invasion of Afghanistan an aggression destitute even of pretext. The Governor-General endeavoured to justify his resolution to persevere in it by putting forth the argument that its prosecution was required, 'alike in observation of the treaties entered into with Runjeet Singh and Shah Soojah as by paramount considerations of defensive policy.' A remarkable illustration of 'defensive policy' to take the offensive against a remote country from whose further confines had faded away foiled aggression, leaving behind nothing but a bitter consciousness of broken promises! As for the other plea, the tripartite treaty contained no covenant that we should send a corporal's guard across our frontier. If Shah Soojah had a powerful following in Afghanistan, he could regain his throne without our assistance; if he had no holding there, it was for us a truly discreditable enterprise to foist him on a recalcitrant people at the point of the bayonet.
One result of the tidings from Herat was to reduce by a division the strength of the expeditionary force. Fane, who had never taken kindly to the project, declined to associate himself with the diminished array that remained. The command of the Bengal column fell to Sir Willoughby Cotton, with whom as his aide-de-camp rode that Henry Havelock whose name twenty years later was to ring through India and England. Duncan's division was to stand fast at Ferozepore as a support, by which disposition the strength of the Bengal marching force was cut down to about 9500 fighting men. After its junction with the Bombay column, the army would be 14,500 strong, without reckoning the Shah's contingent. There was an interlude at Ferozepore of reviews and high jinks with the shrewd, debauched old Runjeet Singh; of which proceedings Havelock in his narrative of the expedition gives a detailed account, dwelling with extreme disapprobation on Runjeet's addiction to a 'pet tipple' strong enough to lay out the hardest drinker in the British camp, but which the old reprobate quaffed freely without turning a hair.
At length, on December 10th, 1838, Cotton began the long march which was not to terminate at Cabul until August 6th of the following year. The most direct route was across the Punjaub, and up the passes from Peshawur, but the Governor-General had shrunk from proposing to Runjeet Singh that the force should march through his territories, thinking it enough that the Maharaja had permitted Shah Soojah's heir, Prince Timour, to go by Peshawur to Cabul, had engaged to support him with a Sikh force, and had agreed to maintain an army of reserve at Peshawur. The chosen route was by the left bank of the Sutlej to its junction with the Indus, down the left bank of the Indus to the crossing point at Roree, and from Sukkur across the Scinde and northern Belooch provinces by the Bolan and Kojuk passes to Candahar, thence by Khelat-i-Ghilzai and Ghuznee to Cabul. This was a line excessively circuitous, immensely long, full of difficulties, and equally disadvantageous as to supplies and communications. On the way the column would have to effect a junction with the Bombay force, which at Vikkur was distant 800 miles from Ferozepore. Of the distance of 850 miles from the latter post to Candahar the first half to the crossing of the Indus presented no serious difficulties, but from Sukkur beyond the country was inhospitable and cruelly rugged. It needed little military knowledge to realise how more and yet more precarious would become the communications as the chain lengthened, to discern that from Ferozepore to the Indus they would be at the mercy of the Sikhs, and to comprehend this also, that a single serious check, in or beyond the passes, would involve all but inevitable ruin.
Shah Soojah and his levies moved independently some marches in advance of Cotton. The Dooranee monarch-elect had already crossed the Indus, and was encamped at Shikarpore, when he was joined by Mr William Hay Macnaghten, of the Company's Civil Service, the high functionary who had been gazetted as 'Envoy and Minister on the part of the Government of India at the Court of Shah Soojah-ool-Moolk.' Durand pronounces the selection an unhappy one, 'for Macnaghten, long accustomed to irresponsible office, inexperienced in men, and ignorant of the country and people of Afghanistan, was, though an erudite Arabic scholar, neither practised in the field of Asiatic intrigue nor a man of action. His ambition was, however, great, and the expedition, holding out the promise of distinction and honours, had met with his strenuous advocacy.' Macnaghten was one of the three men who chiefly inspired Lord Auckland with the policy to which he had committed himself. He was the negotiator of the tripartite treaty. He was now on his way toward a region wherein he was to concern himself in strange adventures, the outcome of which was to darken his reputation, consign him to a sudden cruel death, bring awful ruin on the enterprise he had fostered, and inflict incalculable damage on British prestige in India.
Marching through Bhawulpore and Northern Scinde, without noteworthy incident save heavy losses of draught cattle, Cotton's army reached Roree, the point at which the Indus was to be crossed, in the third week of January 1839. Here a delay was encountered. The Scinde Ameers were, with reason, angered by the unjust and exacting terms which Pottinger had been instructed to enforce on them. They had been virtually independent of Afghanistan for nearly half a century; there was now masterfully demanded of them quarter of a million sterling in name of back tribute, and this in the face of the fact that they held a solemn release by Shah Soojah of all past and future claims. When they demurred to this, and to other exactions, they were peremptorily told that 'neither the ready power to crush and annihilate them, nor the will to call it into action, was wanting if it appeared requisite, however remotely, for the safety and integrity of the Anglo-Indian empire and frontier.'
It was little wonder that the Ameers were reluctant to fall in with terms advanced so arrogantly. Keane marched up the right bank of the Indus to within a couple of marches of Hyderabad, and having heard of the rejection by the Ameers of Pottinger's terms, and of the gathering of some 20,000 armed Belooches about the capital, he called for the co-operation of part of the Bengal column in a movement on Hyderabad. Cotton started on his march down the left bank, on January Jeth, with 5600 men. Under menaces so ominous the unfortunate Ameers succumbed. Cotton returned to Roree; the Bengal column crossed the Indus, and on February 20th its headquarters reached Shikarpore. Ten days later, Cotton, leading the advance, was in Dadur, at the foot of the Bolan Pass, having suffered heavily in transport animals almost from the start. Supplies were scarce in a region so barren, but with a month's partial food on his beasts of burden he quitted Dadur March 10th, got safely, if toilsomely, through the Bolan, and on 26th reached Quetta, where he was to halt for orders. Shah Soojah and Keane followed, their troops suffering not a little from scarcity of supplies and loss of animals.
Keane's error in detaining Cotton at Quetta until he should arrive proved itself in the semi-starvation to which the troops of the Bengal column were reduced. The Khan of Khelat, whether from disaffection or inability, left unfulfilled his promise to supply grain, and the result of the quarrel which Burnes picked with him was that he shunned coming in and paying homage to Shah Soojah, for which default he was to suffer cruel and unjustifiable ruin. The sepoys were put on half, the camp followers on quarter rations, and the force for eleven days had been idly consuming the waning supplies, when at length, on April 6th, Keane came into camp, having already formally assumed the command of the whole army, and made certain alterations in its organisation and subsidiary commands. There still remained to be traversed 147 miles before Candahar should be reached, and the dreaded Kojuk Pass had still to be penetrated.
Keane was a soldier who had gained a reputation for courage in Egypt and the Peninsula. He was indebted to the acuteness of his engineer and the valour of his troops, for the peerage conferred on him for Ghuznee, and it cannot be said that during his command in Afghanistan he disclosed any marked military aptitude. But he had sufficient perception to recognise that he had brought the Bengal column to the verge of starvation in Quetta, and sufficient common sense to discern that, since if it remained there it would soon starve outright, the best thing to be done was to push it forward with all possible speed into a region where food should be procurable. Acting on this reasoning, he marched the day after his arrival. Cotton, while lying in Quetta, had not taken the trouble to reconnoitre the passes in advance, far less to make a practicable road through the Kojuk defile if that should prove the best route. The resolution taken to march through it, two days were spent in making the pass possible for wheels; and from the 13th to the 21st the column was engaged in overcoming the obstacles it presented, losing in the task, besides, much baggage, supplies, transport and ordnance stores. Further back in the Bolan Willshire with the Bombay column was faring worse; he was plundered severely by tribal marauders.
By May 4th the main body of the army was encamped in the plain of Candahar. From the Kojuk, Shah Soojah and his contingent had led the advance toward the southern capital of the dominions from the throne of which he had been cast down thirty years before. The Candahar chiefs had meditated a night attack on his raw troops, but Macnaghten's intrigues and bribes had wrought defection in their camp; and while Kohun-dil-Khan and his brothers were in flight to Girishk on the Helmund, the infamous Hadji Khan Kakur led the venal herd of turncoat sycophants to the feet of the claimant who came backed by the British gold, which Macnaghten was scattering abroad with lavish hand. Shah Soojah recovered from his trepidation, hurried forward in advance of his troops, and entered Candahar on April 24th. His reception was cold. The influential chiefs stood aloof, abiding the signs of the times; the populace of Candahar stood silent and lowering. Nor did the sullenness abate when the presence of a large army with its followers promptly raised the price of grain, to the great distress of the poor. The ceremony of the solemn recognition of the Shah, held close to the scene of his defeat in 1834, Havelock describes as an imposing pageant, with homagings and royal salutes, parade of troops and presentation of nuzzurs; but the arena set apart for the inhabitants was empty, spite of Eastern love for a tamasha, and the display of enthusiasm was confined to the immediate retainers of His Majesty.
The Shah was eager for the pursuit of the fugitive chiefs; but the troops were jaded and sickly, the cavalry were partially dismounted, and what horses remained were feeble skeletons. The transport animals needed grazing and rest, and their loss of numbers to be made good. The crops were not yet ripe, and provisions were scant and dear. When, on May 9th, Sale marched toward Girishk, his detachment carried half rations, and his handful of regular cavalry was all that two regiments could furnish. Reaching Girishk, he found that the chiefs had fled toward Seistan, and leaving a regiment of the Shah's contingent in occupation, he returned to Candahar.