Sir Ian Standish Monteith Hamilton (1853-1947)

He was Commander in Chief of the Mediterranean Expeditionary Force in the unsuccessful campaign against Turkey at Gallipoli. The failure of this campaign - considered risky and inadvisable by many even before it began, including Admiral Fisher (who strenuously objected to the dilution of the British Grand Fleet, and who consequently resigned in protest) - led to the end of numerous careers, including Hamilton's and, temporarily, Churchill (who instigated the plan).