Archealogists have found many swords in rivers. This has historians baffled on how they got there and why.
So RTW is realistic when a whole army runs into the river. Or CA paid them to make this announcement so people see it as a little bit of historical accuracy. Only problem is we outwit the A.I.
Anyways thought I'd mention this since this is always happening in the games. The difference is we get a birds eye view and see how foolish this is. My guess is most people at that time were'nt familiar with water depth and very few could swim, but they did not know this until it was too late. Another is I bet not a lot of them knew to hold there breath when underwater and did'nt realize they could breath it in so they start coughing exhaling more air.
1 thing that contradicts this though is they did'nt mention anything about armour. Bones have a lighter mass than steel and can be washed away in a storm. I could see platemail being washed away too since it would be hollow and would off enough resistance to the current to wash it away, but chainmail would not succumb to this.
Bookmarks