As with so many other prominent figures from antiquity, pretty much nothing is known about Belisarius‘ childhood or the earliest stages of his career. We know only that he was born somewhere between 500 – 505 in the town of Germana (in modern Bulgaria).
Though we cannot know for certain, Belisarius likely hailed from a relatively noble family. This would explain his rapid rise in the army, as well as Procopius‘ silence on his upbringing in the Secret History (in contrast to the vitriol directed at the mean origins of Justinian, Theodora, and Belisarius’ wife, Antonina).
Whatever the circumstances of Belisarius’ upbringing, he appears to have enlisted in the military at an early age and risen rapidly through the ranks. By the time we meet up with him in 527 A.D., he is serving as an officer in Justinian’s bodyguard. At that time, the Roman Empire was at war with the neighboring Persian Empire, and Justinian, acting as commander of the eastern campaign, sent Belisarius and Sittas into Persarmenia to plunder the countryside in retaliation to Persian attacks on the regions of Iberia and Lazica. The expedition was a success, and Belisarius and Sittas returned with booty and captives.