Today, 107 years ago, on September 29, 1918 (August 25, 1918), the Allied countries broke through the German Army's "Hindenburg Defence Line".Hindenburg Defence Line overlooked September 29, 1918, the Allied countries launched a mass offensive on the western line, breaking through the German "Hindenburg Defence Line", becoming a major situation since the Allied countries' August offensive.On the same day, Bulgaria and the Allied States signed a ceasefire agreement, the Balkan battlefield basically ended.