Portal:Byzantine Empire/DYK/18

• ... that during the absence of Byzantine emperor Heraclius from Constantinople in 622–626, the patrician Bonus defended the city from a major Avar siege in July 626?
• ... that in the Battle of Lalakaon in 863 AD, three Byzantine armies, marching from different directions, converged on time to surround an Arab army?
• ...that in 1261, Caesar Alexios Strategopoulos reconquered Constantinople from the Latins, thereby restoring the Byzantine Empire?