Serbo-Bulgarian War: Serbia declares war and is defeated at Slivnitsa
- When
- 1885
- Where
- North-western border; Slivnitsa
- Episodes
- 2
The Serbo-Bulgarian War erupted in November 1885 following the unification of Bulgaria and Eastern Rumelia. Serbia, seeking compensation for the altered Balkan balance, declared war on 14 November. Despite initial advances, the Royal Serbian Army suffered a decisive defeat at the Battle of Slivnitsa from 17 to 19 November, solidifying Bulgarian unification.
Episodes
- Serbian Declaration of War
Serbia declared war on Bulgaria on 14 November 1885, crossing the border in three columns to seek compensation for the Balkan balance shift.
- Battle of Slivnitsa
The Royal Serbian Army was defeated by the Bulgarian Army at Slivnitsa from 17 to 19 November 1885, halting the Serbian advance.
Background and detail
Background. The conflict arose from the 1885 unification of Bulgaria and Eastern Rumelia, which upset the Balkan balance of power. King Milan I demanded compensation, influenced by Austria-Hungary's opposition to the merger. Serbia mobilized only half its available manpower, fearing internal unrest and underestimating Bulgarian strength, while the Bulgarian field army consisted of approximately 30,000 men.
Declaration of War. Serbia declared war on 14 November 1885, crossing the lightly defended north-western border in three columns. The Serbian manifesto misled soldiers by claiming they were aiding Bulgarians against the Ottomans, causing surprise when they encountered Bulgarian forces. Fire was exchanged on 13 November, marking the start of active hostilities.
Battle of Slivnitsa. The Battle of Slivnitsa occurred from 17 to 19 November 1885. Serbian forces halted after a Bulgarian delaying action at the Dragoman Pass. On 18 November, Serbians attacked the Bulgarian left flank, but Bulgarian counterattacks on 19 November near Karnul prevented Serbian consolidation. The Bulgarian victory solidified the unification of Bulgaria.
People involved
- Milan I · King of Serbia
- Prince Alexander · Bulgarian prince who personally led the final Bulgarian attack on 27 November 1885
Sources
- Serbo-Bulgarian War Wikipedia, revision of 2026-09-16
- Battle of Slivnitsa Wikipedia, revision of 2026-08-22
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.