Whilst home on leave in 1917 during World War I, he discovered his wife Dorothy was having an affair with a Russian, Anton Baumberg.
He shot him dead, and was acquitted of murder and manslaughter in a much-publicised trial at the Old Bailey.
In 1917, on leave from the front, he returned home to find his wife absent, and eventually tracked her down and found her with Anton Baumberg, both partly clothed.
He tracked him down to a seedy lodging house behind Paddington Station, London, where he went with his service revolver and a whip, intending to horsewhip him, but shot him four times.
At his trial for murder in 1917, the defence was led by Sir John Simon, the prosecution by Richard David Muir, and the judge was Henry McCardie.