Number of soldiers in Chandragupt’s

In Jain tradition, there is no fixed exact number given for Chandragupta Maurya’s soldiers. Jain sources mainly describe him as a powerful emperor who later turned toward Jain dharma and followed Ācārya Bhadrabāhu. ( jainworld.jainworld.com)

If you mean his Mauryan army in general, ancient historical accounts outside Jain texts describe it as very large, but the exact figure is not treated as a settled Jain teaching. ( jainworld.jainworld.com)