If you're really a spektic then explain this:

[Anomalocaris]

India, 200 million soldiers..hahahahahaha!  If world wars were so easy to win......

Putting seemingly overwhelmingly large number of soldiers into the field has very little to do with winning, as Russia’s experience in WWI demonstrates.  For that matter Soviet experience during the first 12 month of German invasion in 1941 also shows this.    The men sent to die need to know how to accomplish something before dying, and the organization and infrastructure behind them has to provide them with the wherewithal to accomplish something before dying.

Otherwise there is nothing easier than killing untrained and poorly equipped men playing at war.      No matter how big is the opposing army, it is always possible to fire more bullets at them than they have men to absorb the bullets.