Svatopluk II rebelled against Mojmír II in 898 in an attempt to take over control of Great Moravia. Their conflict climaxed when Bavarian troops intervened in the winter of 898/899. Mojmír II defeated the Bavarians and captured Svatopluk II, but the Bavarians managed to rescue him and brought him to East Francia.
In 898, Svatopluk II challenged Mojmír II for control of Great Moravia. Their dispute intensified when Bavarian forces intervened during the winter of 898/899. Mojmír II defeated the Bavarians and captured Svatopluk II, but the Bavarians managed to rescue him and brought him to East Francia.