i would hope not, on multiplayer it's kind of cool but in single player it would get really annoying having battles being dragged on for ages. Assuming it would affect AI was well as the player.
but it would be authentic 
So, for the sake of realism, the battles should be 50,000 vs 50,000 and it doesn't matter if no one can run it. The point of a game is to have fun. You have to balance the realism with the fun. Take a look at the Highlanders in this mod. There was a whole argument about whether or not Docm should make the Highlanders dirty or everyone in the game dirty. It would make the game realistic, just not fun.

This is a realistic picture of a French infantry man on campaign, but staring at this all day would make you depressed and take the fun out of the mod.

This is a 95th rifles man, if Docm made him like this, the mod would suck.
Another time, I told Docm that the 95th had sword bayonets because he didn't give them any. Docm told me that giving them bayonets, however realistic, would make the 95th OP.
Realism is nice, but when it detracts from the mod, it is useless.