While Jack rounds off the number to an even 300 and makes the implication that all were shell-shocked and shot for cowardice, during WWI 306 British & Empire servicemen were executed, shot at dawn by firing squad, following courts martial for military offenses under the British Army Act: alleged acts of cowardice, desertion, sleeping at post, casting away arms and disobedience, between 1914 and 1918.
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