sentences:  The first major and mass conscription of mercenaries appeared during the Bohemian Wars (1468–78), whereas the core of his royal infantry, a force of 6,000–8,000 armed men, were incorporated into the Black Army (the origins of the moniker could also come from this era).After Matthias's income increased periodically, simultaneously, the number of mercenaries increased as well.Historical records vary when it comes to numbers, mainly because it changed from battle to battle and most soldiers were only employed for the duration of combat or a longer conflict.