Simeon's troops under Alogobotur invade Croatia in …

Years: 926 - 926

Simeon's troops under Alogobotur invade Croatia in 926, at this time an ally of Constantinople.

The reason might have been that Tomislav had received and protected the Serbs who were expelled by Simeon from Rascia.

In all probability, however, the main reason is that Simeon, if crowned by the Papal Legate, fears an attack from the Emperor Romanos Lekapenos, supported by Tomislav.

Romanos had won the friendship of Tomislav some years previously, handing over Dalmatia to Tomislav and recognizing him as King of Croatia (Pope John X had recognized Tomislav as King of Croatia in 925).

Tomislav had sent his troops to Italy during the summer of 926 to expel Saracens from the city of Sipontus, which belongs to the imperial province of Langobardia.

This event could have been sufficient proof to Simeon that the Croats had taken the side of Constantinople and that they would support the Greek emperor actively in the future.

Therefore, when Simeon sends a great army against the Croats, the Bulgarians are met by Tomislav's army in the mountainous region of Eastern Bosnia.

The Croatian forces under the leadership of their king completely devastate the Bulgarian army.

Key to Tomislav's triumph is likely the choice of terrain on which the battle takes place: Croatian soldiers are probably more skilled in fighting in the mountainous terrain of the Bosnian highlands.

The Croatian victory is so decisive and the battle so big that contemporary sources greatly overestimate Croatia's army at one hundred and sixty thousand men, with a slightly bigger force on the Bulgarian side.

This is the only battle Tsar Simeon ever loses.

Since both rulers maintain good relations with John X, the pope is able to negotiate an end to the war soon afterward without any further border changes.

Tomislav, fearing Bulgarian retribution, accepts to abandon his union with Constantinople and make peace on the basis of the status quo, negotiated by the papal legate Madalbert.

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