Munro, a volunteer in Loudoun’s regiment during the ’45, obtained a commission in 1747 in the company commanded by his chief, Sir Harry Munro of Foulis. He owed his subsequent promotion mainly to the friendship of the Dowager Duchess of Gordon, who in 1759 nominated him major in the Highland regiment then raising for her second husband Staats Long Morris.
Soon after returning home, he began his election campaign in Inverness Burghs, and purchased for £1400 the strategically placed estate of Muirtown, Elgin.
In India he was soon at odds with Warren Hastings, whose criticism of his lack of enterprise was refuted by his capture of Pondicherry in October 1778.
Absent, probably through illness, from the division of 27 Nov. 1783 on Fox’s East India bill, he was counted ‘doubtful’ by Robinson in December but as probably pro-Pitt in a future Parliament;
