regiment. So conspicuous was his conduct on this occasion that Whitelocke in his despatches thus writes of him: ‘Nor should I omit the gallant conduct of Major Nichols [sic] of the 45th regiment, who, on the morning of the 6th instant, being pressed by the enemy near the Presidentia, charged them with great spirit and took two howitzers and many prisoners.’ Nicolls was the only regimental officer whose name appeared in the despatches. At the subsequent trial by court-martial of Whitelocke he was one of the witnesses.
On disembarking at Cork Nicolls was appointed lieutenant-colonel of the York rangers on 29 Oct. 1807. Almost immediately afterwards he was transferred to the command of the second battalion of the 14th regiment, which he himself was chiefly instrumental in raising from volunteers in the Buckinghamshire militia. In 1808 he embarked at Cork with his battalion, which formed part of the reinforcements taken to the Peninsula by Sir David Baird. At Coruña he was in the brigade of Major-general Rowland Hill, and well earned the gold medal which he received for that action: ‘On the left Colonel Nicholls [sic], at the head of some companies of the 14th, carried Palerio Abaxo’ (Napier, Peninsular War). He was again mentioned in despatches.
In the summer of 1809 Nicolls took part in the Walcheren expedition, and on 12 Aug. led his battalion to the assault of an entrenchment close to the walls of Flushing. So gallant and impetuous was the rush of the 14th that in a few minutes the work was taken and a lodgment established within musket shot of the town. In September, after the fall of Flushing, he returned to England and married.
In April 1811 Nicolls was appointed by the commander-in-chief assistant adjutant-general at the Horse Guards. In the following February he was promoted to the position of deputy adjutant-general in Ireland, where he was at the head of the department, the adjutant-general being absent on service. A few months later he went out to India to take up the appointment of quartermaster-general of king's troops. During the Nepaul war of 1814–16 he was specially selected to command a column destined for the invasion of the province of Kumaon. The commander-in-chief in India publicly referred to ‘the rapid and glorious conquest of Camoan by Colonel Nicolls.’ He had been gazetted colonel on 4 June 1814. The praise was well deserved, for in a few days he had captured Almorah, and reduced the entire province, with the exception of a few forts. In the Pindarree and Mahratta war of 1817–1818 Nicolls commanded a brigade. Promoted to the rank of major-general on 9 July 1821, he necessarily vacated his appointment as quartermaster-general of king's troops; but in April 1825 he resumed his connection with India, having been appointed to the command of a division in the Madras presidency. Soon after his arrival he was selected to command a division of the army which, under Lord Combermere, besieged and captured the strong fortress of Bhurtpore. He commanded one of the assaulting columns, and took a prominent part in the desperate fighting which ensued. His column was headed by the grenadiers of the 59th, who advanced to the inspiriting strains of the ‘British Grenadiers,’ played by the general's express orders. As Napier said of another officer who stimulated his highlanders in the Peninsula with the bagpipes, ‘he understood war.’ It may be mentioned that, although the 59th had been carefully trained in the use of hand-grenades, the general ordered that no powder should be used; for, as he remarked, the lighted match of a grenade causes a moral effect on the enemy as great as if it were loaded, while if it is loaded the throwers are almost as likely to be injured as the enemy. For his distinguished services at Bhurtpore Nicolls was created a K.C.B.
After the fall of Bhurtpore he returned to Madras, where he remained till April 1829. At that date he was transferred to Meerut. In July 1831 he returned to India. In 1833 he was appointed colonel of the 93rd highlanders.
On 10 Jan. 1837 Nicolls became a lieutenant-general, and in the following year once more went out to India as commander-in-chief in Madras, and in 1839 was transferred to Bengal as commander-in-chief in India. But the part that Nicolls played was not very important. Lord Ellenborough's somewhat despotic disposition deprived the commander-in-chief of the power of influencing affairs. Nicolls seems, however, to have taken a just view of persons and things. When the gallant but physically infirm General Elphinstone was appointed to the command at Cabul, Nicolls was most anxious that General Nott should be substituted for him. He also, in a series of minutes, opposed the continued occupation of Cabul. Sir Charles Napier, in his usual energetic language, denounced him furiously because he expressed the opinion that Meanee should not have been fought. In March 1843 Nicolls resigned his appointment and returned to England. In 1840 he was transferred from the colonelcy
