Editing 622 (section)

==== Byzantine Empire ====
* [[Byzantine–Sasanian War of 602–628#Byzantine counter-offensive|Byzantine–Sasanian War]]: Emperor [[Heraclius]] sails from [[Constantinople]] with an expeditionary force (probably 50,000 men), and starts a counter-offensive against the [[Sasanian Empire|Persian Empire]] (his young son, [[Constantine III (Byzantine emperor)|Constantine III]], is left behind as [[Regency (government)|regent]] under the charge of [[Sergius I of Constantinople|Sergius I]], [[Ecumenical Patriarch of Constantinople|patriarch of Constantinople]], and patrician [[Bonus (patrician)|Bonus]]). He lands a few days later at the junction of [[Cilicia]] and [[Syria]], near [[İskenderun|Alexandretta]] and ancient [[Issus (town)|Issus]].
* [[Heraclius' campaign of 622|Battle of Issus]]: Heraclius defeats the Persian forces under [[Shahrbaraz]] in [[Cappadocia]]. He recaptures [[Anatolia]], but returns to Constantinople to deal with the threat posed to his [[Balkans|Balkan]] domains by the [[Avars (Carpathians)|Avars]], and puts the [[Byzantine army]] into winter quarters in [[Pontus (region)|Pontus]].{{sfn|Kaegi|2003|p=116}}