Premise: Humphrey Arthur Gilkes MC & Three Bars (13 October 1895 – 11 July 1945) was a British soldier and doctor. He is one of four soldiers to have been awarded the Military Cross four times, all in the First World War. He was a medical officer in the Colonial Medical Service between the wars. He also served in the British Army in the Second World War, and was killed in an aeroplane crash at Djibouti.
Hypothesis: A soldier has never been awarded the Military Cross five times.