Sir Charles Munro entered the British Army as Ensign in the 45th (Nottinghamshire) Regiment of Foot, and served with much distinction, under the Arthur Wellesley, 1st Duke of Wellington - who in the General Orders of Madrid described Sir Charles Munro as "one of the bravest officers in the British Army", in the Peninsular Campaign, from 1810 to the conclusion of the war in 1815.
It has been reported that Charles Munro also served in the War of Independence in South America and in 1817 commanded the 1st Regiment of English Lancers in the service of Venezuela under the celebrated patriot, General Simon Bolivar.
[1] To fund a protracted and ultimately futile attempt to prevent the succession of Mary Seymour Munro, daughter of the 8th baronet, to Foulis Castle, Charles granted bonds on his prospective inheritance of the estate.
[1] Falling heir in any case on Mary's death without succession in 1849, he inherited an estate much depleted by the costs of the litigation on her side, and heavily in debt to his own lawyers.
Ultimately he left the task of extricating the estate from these legal entanglements to his son and heir Charles.