This absurd claim has been argued by almost exclusively leftist, revisionist historians over the last half century.
German atrocities in neutral Belgium.
France, Russia and the UK faced down Germany and the Austro-Hungarians.
Here is a two part question that these history-changers must answer:
i) Was Belgium a nation whose neutrality was guaranteed by the UK?
ii) Who invaded Belgium?
Answers:
i) Yes. Britain was committed, by treaty, to act with military force against any aggressors who fought against neutral Belgium.
ii) Germany invaded and raped Belgium from the 4th of August 1914.
Supplementary question:
Consequently, who began The Great War?
