Historical Background
"The kingdom of Magadha was originally brought under rule by a prince of the Paurava family (of 'Porus' fame). The dynasty, known as Haryanka, came to an end when its last king was murdered by a userper known today only as Shishunaga. Shishunaga had a successful career, ruling over several kingdoms in what could legitimately be called India's first empire, but his Karma (one could say) eventually caught up with him. According to Curtius, the bastard son of the last prince of the Haryanka-known as Ugrasena Nanda-thrust a dagger into Shishunaga's throat, then promptly had the royal children murdered. The Nanda dynasty was born.
Born of a Sudra (plebian or labor-caste) courtesan, Nanda was something of a novus homo who waged war against the aristocracy, exterminating many of the Kshatriya (warrior caste) clans in his growing empire. In doing so he garnered the relentless hostility of politically-minded Brahmins such as Chanakya, an exile from the Nandan court who quickly rose to the occasion and began plotting to overthrow the government in Gandhara. Chanakya flees to Takshashila where he meets Chandragupta, and he and his young protege begin recruiting mercenaries and other armed malcontents for a rebellion.
This inaugural battle did not go well for Chandragupta, as he and his insurgents brashly attacked the capital without having consolidated their power base among the 'hereditary' (i.e. Maula) military class. By all accounts they were defeated, forcing them to regroup in the countyside to build up their military strength and political support.
From Jain legend, Chanakya was a charioteer in the initial uprising against the Nandas. As Chandragupta was quite yound here, Chanakya was likely to have been the overall commander. It is not known who commanded the Nandas, but we opt here to give the assignment of mopping up this insurrection to the Nanda's able general Bhadrasala, who enjoyed some respect as Mahasenapati (commanding general) , even among his adversaries. Chandramas and Dhana were the younger of Ugrasena's sons: we've given them commands here appropriate for Nandan princes."
(From the GBOH Chandragupta module by Stephen R. Welch).
The stage is set. The battle lines are drawn and you are in command. The rest is history.
War Council
Mauryan Army
Leader: Chanakya
Take 5 Command Cards 
Move First 
Nandan Army
Leader: Bhadrasala
Take 5 Command Cards
Victory
6 Banners
Special Rules
The “Bow armed” Auxilia units are "special". They are armed with bow and follow ranged combat rules as for regular Bow Infantry.