War is a question of money rather than a question of available people to waste. Just think about that that a single well equipped soldier can shoot X unarmed enemies without a physical problem. An army is only as good as its equipment. Tanks, planes, ships, cars, fuel, ammo, weapons, buildings, information etc. All those things cost money. Its the money that wins wars, not large armies. We have come to a point where war is more than a senseless the-higher-number-of-people-wins game like "Blitzkrieg 2" or "Age of Empires".
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