 Lord Rothes was a captain in the Fife Royal Garrison Artillery Militia, a lieutenant in the Royal Highland Regiment, known as the Black Watch, and a lieutenant-colonel in the Highland Cyclist Battalion.The Leslies resided in England until 1904 when they took possession of the 10,000-acre family seat in Scotland, Leslie House in Leslie, Fife.Although the couple kept homes in England, including a townhouse in Chelsea, London, they lived most of each year at their Scottish estate.