[3] Lord Dundonald, Speaking at the annual gathering of the Scottish Clans Association in London, said that while commanding the forces in Canada he had succeeded in changing the uniforms of several regiments, and dressing them in the Highland garb.

[6] In 1884, he went to the Soudan in command of a detachment of the Camel Corps in the expedition for the relief of Khartoum, for his distinguished services in this campaign, he was mentioned in dispatched and received the medal with two clasps and the Khedive's bronze star with the brevet of lieutenant-colonel.

[5] He took part in the Relief of Ladysmith in February 1900,[5] although his South African troops, unimpressed by his leadership, referred to him as "Dundoodle".

[10] He and his family stayed at Crichton Lodge in Rockcliffe, Ottawa, Ian McAllister of Morton College, Oxford was appointed as his private secretary whilst in charge.

[11] During his time at Canada, he authored a scheme for the reorganisation of the Canadian militia on entirely new lines, which was adopted, he also wrote a drill & training book, directed towards Cavalry & infantry, additionally, he revamped the cadet corps structure and established several other associations aimed at enhancing the militia.

[13][14] In defence of his critics, Dundonald asserted that communication between him and the minister of the militia had been corrupted which left Canada defenceless.

[30] (Patented 16 July 1901)[31][32] When Lord Dundonald is not busy with war he is practising scientific stock raising and agriculture on his Welsh estate, Gwrych Castle.

Lord Dundonald died at his home in Wimbledon in April 1935, aged 82, and was succeeded in the earldom by his eldest son, Thomas.

As his eldest son died unmarried and without issue, he was succeeded by his nephew, Ian Douglas Leonard Cochrane as the 14th Earl of Dundonald.