Editing 924 (section)

==== Europe ====
* Fall &ndash; [[Bulgarian–Serbian wars of 917–924|Bulgarian–Serbian War]]: Tsar Simeon I sends a [[punitive expedition]] force against [[Principality of Serbia (early medieval)|Serbia]], led by [[Theodore Sigritsa]] and [[Marmais]], but they are ambushed and defeated. [[Zaharija of Serbia|Zaharija]], prince of the Serbs, sends their heads and armour later to Constantinople (approximate date). 
* Winter &ndash; The Hungarians invade [[Duchy of Saxony|Saxony]] and force King [[Henry the Fowler|Henry I]] ('''the Fowler''') to retreat into the [[Royal palace of Werla|Castle of Werla]]. He makes a pact and agrees to pay them [[tribute]] for 9 years. They return to the [[Po Valley]] and sack the cities of [[Bergamo]], [[Brescia]] and [[Mantua]] (Northern [[Italy]]).