Mobilization of the Bulgarian Army in 1915
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The mobilization of the Bulgarian Army on the eve of the Kingdom of Bulgaria's entry into World War I took place between 11 and 30 September 1915. It was a direct consequence of the military convention between the German Empire, Austria-Hungary and Bulgaria and the Treaty of Friendship and Alliance between Bulgaria and Germany that were signed on 6 September, marking the official alignment of the country with the Central Powers.