Sultan Süleyman enrolls Khayr ad-Din (Barbarossa) in…
1533 CE
Sultan Süleyman enrolls Khayr ad-Din (Barbarossa) in Ottoman service in 1533 as grand admiral.
As part of the arrangement with Barbarossa, the Ottomans annex Algiers to the empire as a special timar province permanently assigned to the grand admiral to support the fleet.
Ottoman land troops are sent to defend Algiers against Habsburg attacks, which probably is the main reason Barbarossa has agreed to join the sultan.