Well there's this glitch in the game and since it is beneficial to players I doubt that anyone has reported it. Okay so the glitch is that if u reassign the same number of supply troops to a city as the idle population in that city and then dismiss them, the idle population doubles, meaning that people can train double the amount in trainathons. I think it works even if u train the supply troops in that city then dismiss. Lol I think no one will like this post..