The Amazons of the south are an all-female tribe who fight with great ferocity.
In order to protect their independence, they have created an isolated society and constantly battle enemy nations. In this culture, warriors are highly valued, and becoming a warrior requires fierce trials and rituals.
Completing the trial of taking 50 orcs' heads has earned you the trust of the Amazons, and status equal to that of a warrior. Their efforts have slowed the progress of the invading orc army.