World War I
It is well known that the assassination of the Austrian Archduke Franz Ferdinand triggered the World War I. Let's quote Fisher on the great war.
"Not mentioned by the Scottish Rite journal [New Age] was the fact that the alleged assassins of the Archduke were members of the "Black Hand," a South Slav revolutionary organization which was a progeny of Freemasonry.
"During the trial, Princep testified that his colleague, Ciganovitch, 'told me he was a Freemason;' and, on another occasion, 'told me that the Heir Apparent [Franz Ferdinand] had been condemned to death by a Freemason's lodge.'
"Moreover, another of the accused assassins, Chabrinovitch, testified that Major Tankositch, one of the plotters, was a Freemason." (ibid, pp. 217-218)