[quote=The Fated Fallen]
100,000 people from every army in Europe, and everybody laughs at the crusades because they all starved and got diseases. Not to mention that 100,000 could well count civilians, because if you wanted to go they let you because they believed all were equal in the eyes of god.Your argument of high fantasy does have a point however, though it isn't like we are in a state of total war. In the event of conscription and magic to support the army perhaps something along the lines of 80,000 could be mustered. However they wouldn't be too efficient, mostly built on militia, but so was every medieval army. As for saying peasants were still around, big deal. Russia still had peasants in 1850 (and arguably afterwards)
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Nobody laughs at the Crusades because it was an amazingly huge campaign that succeeded in taking Jerusalem.
Secondly, we're talking about a coalition aided by magic and shit. If the Orcs join in, then every Orc will join. That is a lot of Orcs. Orcs are more efficient than militia.

And nobody even mentioned peasants.