Silas was a Human male who served as a Mandalorian during the final decades of the Galactic Republic. He was a rookie in the True Mandalorian mercenary army around 52 BBY, when he joined his friend and mentor Jango Fett in the Battle of Korda Six. The operation on Korda Six was led by Mandalore Jaster Mereel, with the objective of extracting members of the Korda Defense Force from hostile territory; however, the mission was actually a trap for Mereel and his men, set by the Mandalorian renegades known as Death Watch. The violent splinter group decimated the Korda extraction teams and murdered Mereel during the ensuing battle. Silas and Fett watched as Mereel's comrade, Montross, left him to die on the battlefield so that he might assume command of the Mandalorian armies.