The entrenchment at Cawnpoor having been completed was garrisoned by the 64th regiment under Colonel Wilson.
On the 18th of September an advance party, consisting of No. 8 and the Light Company of the 78th, the Sikh regiment, and four guns under Major McIntyre of the 78th, was pushed across the river to form a tête-de-pont to enable the bridge to be completed on the enemy’s side of the river. The men were exposed during the day to a skirmishing fire from the enemy, who also opened a few guns upon them from a distance, but with little effect. During the day these companies were relieved by Nos. 6 and 7 of the 78th, and Major Haliburton took command of the advanced party. Before daybreak on the 19th, this party, which was stationed all night on a dry sandbank in the middle of the Ganges, pushed quietly across the intervening islands to the mainland, in order to cover the advance of the force, which crossed with little opposition, the rebel army, after a slight show of resistance, retiring on their entrenched position about three miles off, towards Mungulwar.
The strength of the force amounted to about 3000, that of the 78th being 26 officers and 523 men; Colonel Walter Hamilton being Brigadier, Colonel Stisted commanded the regiment.
On the morning of September 21st, the advance on Lucknow commenced, and the enemy’s position was soon reached near Mungulwar, which for some weeks they had been busily employed in fortifying. The position, however, was soon carried, the enemy rapidly pursued, and many of them cut up by the British cavalry; four guns and a colour were captured. The British loss was merely nominal.
Rain now commenced to pour in monsoon torrents, and hardly ceased for three days. Through it the force pushed in column of route over the well-known scenes of their former struggles, by Buseerutgunge and the village of Bunnee, when, about 2 o’clock in the afternoon of the 23rd, the enemy were descried in a strong position in the neighbourhood of Lucknow. The head of the column at first suffered from the fire of the enemy’s guns as it was compelled to pass along the trunk road between morasses; but these passed, the force quickly deployed into line, and the 2nd brigade advancing through a sheet of water drove back the right of the mutinous army, while the 1st Brigade attacked it in front. Victory soon declared for the British force, which captured five guns. The enemy’s cavalry, however, 1500 strong, creeping through lofty cultivation, made a sudden irruption on the baggage in the rear of the relieving force, inflicting some loss on the detachment of the 90th that was guarding it. In this engagement the 78th lost 1 man killed and 6 wounded.
The British passed the night of the 23rd on the ground they had won, exposed, however, to a cannonade from the enemy’s guns. On the morning of the 24th, their fire inflicted such loss on the British force, especially the 78th, which had 4 men killed and 11 wounded by it, that the General, having determined to halt this day to obtain rest previous to the attack on the city, found it necessary to retire the left brigade out of reach of the guns.
The 24th was spent in removing all the baggage and tents, camp-followers, sick and wounded, into the Alum Bagh, which, on the advance being made next day, was left in charge of Major M’Intyre of the 78th, with a detachment of 280 Europeans, some Sikhs, and 4 guns. Of these, Major M’Intyre, Lieutenant Walsh, and 71 non-commissioned officers and men, besides 34 sick and wounded, belonged to the 78th.
A short description of the desperate position of those whom Havelock hoped to rescue may not be out of place here.
In the month of June (1857), most of the native regiments at Lucknow, as elsewhere, having broken out into open mutiny, the Residency and a strong fort in the city called Muchee Bhorwan, were put in a state of defence for the protection of the Europeans. On the 30th of June, the garrison, consisting of 300 of H.M.’s 32nd Regiment, and a few Native infantry, cavalry, and artillery, marched out to Chinhut to meet a rebel army which was marching upon Lucknow; but the native gunners proved traitors, overturned the guns, cut the traces, and then deserted to the enemy. The remainder of the force thus exposed to a vastly superior fire, and completely outflanked, was compelled to make a disastrous retreat, with the loss of 3 guns and a great number killed and wounded.
The force being thus diminished the Muchee Bhorwan had to be evacuated. On the night of the 1st of July it was blown up, and the troops marched into the Residency, the investment of which the enemy now completed; and for three months the brave garrison had to undergo a siege regarding which the Governor-General of India justly writes, “There does not stand in the annals of war an achievement more truly heroic than the defence of the Residency of Lucknow.”