Re:Antikythera Mechanism: An ancient 'computer' that 'should...
by marcus_holmes on Saturday December 11, 2021 @05:53AM
(#29519993)
Wikipedia says 400,000 samurai: https://en.wikipedia.org/wiki/Samurai#:~:text=In%20the%20187....
Every Samurai had at least two swords. So at least a million swords. Let's say a sword weighs 1Kg, that's 1000 tonnes of steel. So probably not enough for a battleship, but maybe a small destroyer.
Even in Europe, a large part of the armies were peasants with whatever comes to hand. Their resource constraint on metals wasn't the ore, but the availability of the enormous quantities of wood required to process it.