The Treaty for friendship and alliance between Bulgaria and Germany[ citation needed ] was a secret military treaty signed on 6 September (24 August O.S.) 1915 between the Kingdom of Bulgaria and the German Empire, establishing an alliance between the two powers. [1] Besides aligning Bulgaria with the Central Powers, the treaty granted Bulgaria territorial expansion towards Serbia. [2]
{{cite journal}}
: CS1 maint: DOI inactive as of July 2025 (link)