Yes, on the side of the central powers.
15 October 1915 - 29 September 1918
Yes. Bulgaria joined the Central Powers to fight Serbia.
The leader of the Government: Vassil Radev engaged Bulgaria to join the World War I
the bulls
after its end
no not at all they were not involved in the first world war
October 14, 1915
Then, as now, Sofia.
March 1, 1941.
Radoslavov
Germany, Austria, Turkey
joined Germany