General Sir Thomas Monteath Douglas KCB ADC (1787 – October 1868) was an officer of the Bengal Army of the East India Company.

He next served throughout the campaigns of the Anglo-Nepalese War in 1814 and 1815 under Jasper Nicolls and David Ochterlony, and was present at the battles of the Timlee Pass and of Kulinga, and at the assaults of Jountgarh and Srinagar, at which latter place he was again wounded.

The 35th Bengal Native Infantry was attached to the brigade which was sent to Bikaner in the extreme east of Rajputana, in order to hem in parties of raiders and drive them back into Central India, where Lord Hastings was waiting to meet and destroy them.

[2] After Kabul was taken, Monteath's regiment was one of those left to garrison the city, and remained there until October 1841, when, on the arrival of reinforcements, it was ordered with the 13th Light Infantry to return to India under the command of Sir Robert Sale.

On 16 April 1842 the Jellalabad garrison was relieved by General George Pollock, and in the campaign which followed Monteath held command of a brigade.

At the close of the campaign Monteath was promoted to colonel for his gallant conduct and appointed an aide-de-camp to the queen on 4 October 1842.

He never returned to India, but was promoted in due course to be major-general on 20 June 1854, lieutenant-general on 18 March 1856, and full general on 9 April 1865.

In March 1865 he was made a Knight Commander of the Order of the Bath in recognition of his long services during the early years of the century.