Reginald Brett, 2nd Viscount Esher

Reginald Baliol Brett, 2nd Viscount Esher, was a British historian and Liberal Party politician, although his greatest influence over military and foreign affairs was as a courtier, member of public committees and behind-the-scenes "fixer", or rather éminence grise. Behind the scenes, he influenced many pre-First World War military reforms and was a supporter of the British–French Entente Cordiale.