Second part (Mods if too boring please delete)
Campbell had advanced cautiously and had captured Lucknow with few casualties, but by failing to prevent the rebels escaping, he was forced to spend much of the following summer and monsoon season clearing the rebels from the countryside of Oudh. As a result, his army suffered heavy casualties from heatstroke and other diseases.
Outram had also failed to protest his orders not to advance on 14 March, which had allowed most rebels to escape. Outram was Civil Commissioner for Oudh in addition to his military command, and may have allowed his hopes for pacification and reconciliation to override his soldier's instincts.
The Secundra Bagh is a high walled garden approximately 120 yards square, with parapets at each corner and a main entry gate arch on the southern wall. Campbell's column approached along a road that ran parallel to the eastern wall of the garden. The advancing column of infantry, cavalry and artillery had difficulty manoeuvering in the cramped village streets. They were afforded some protection from the intense fire raining down on them by a high road embankment that faced the garden. Musket fire came from loopholes in the Secundra Bagh and nearby fortified cottages, and cannon shot from the distant Kaisarbagh (the former King of Oudh's palace). Campbell positioned artillery to suppress this incoming fire. Heavy 18-pounder artillery was also hauled by rope and hand over the steep road embankment and placed within 60 yards of the enclosure. Although significant British casualties were sustained in these manoeuvres, the cannon fire breached the southeastern wall.
Elements of the Scottish 93rd Highlanders and 4th Punjab Infantry Regiment rushed forward. Finding the breach too small to accommodate the mass of troops, the Punjab Infantry moved to the left and overran the defences at the main garden gateway. Once inside, the Punjabis, many of whom were Sikhs, emptied their muskets and resorted to the bayonet. Sepoys responded with counter-attacks. Highlanders pouring in by the breach shouted, "Remember Cawnpore!" Gradually the din of battle waned. The dwindling force of defenders moved northward until retreat was no longer possible. The British numbered the sepoy dead at nearly 2,000.
By late noon, a detachment of the relief column led by Adrian Hope disengaged from the Secundra Bagh and moved towards the Shah Najaf. The Shah Najaf, a walled mosque, is the mausoleum of Ghazi-ud-Din Haider, the first king of Oudh in 1814. The defenders had heavily fortified this multi-story position. When the full force of the British column was brought to bear on the Shah Najaf, the sepoys responded with unrelenting musketry, cannon grape shot and supporting cannon fire from the Kaisarbagh, as well as oblique cannon fire from secured batteries north of the Gumti River. From heavily exposed positions, for three hours the British directed strong cannon fire on the stout walls of the Shah Najaf. The walls remained unscathed, the sepoy fire was unrelenting and British losses mounted. Additional British assaults failed, with heavy losses.
However, retiring from their exposed positions was deemed equally dangerous by the British command. Fifty Highlanders were dispatched to seek an alternate access route to the Shah Najaf. Discovering a breach in the wall on the opposite side of the fighting, sappers were brought forward to widen the breach. The small advance party pushed through the opening, crossed the courtyard and opened the main gates. Seeing the long sought opening, their comrades rushed forth into the Shah Najaf. Campbell made his headquarters in the Shah Najaf by nightfall.
Within the besieged Residency, Havelock and Outram completed their preparations to link up with Campbell's column. Positioned in the Chuttur Munzil, they executed their plan to blow open the outer walls of the garden once they could see that the Secundra Bagh was in Campbell's hands.
The Moti Mahal, the last major position that separated the two British forces, was cleared by charges from Campbell's column. Only an open space of 450 yards now separated the two forces. Outram, Havelock and some other officers ran across the space to confer with Campbell, before returning. Stubborn resistance continued as the sepoys defended their remaining positions, but repeated efforts by the British cleared these last pockets of resistance. The second relief column had reached the Residency.