I wrote earlier that medium tanks were most the time with the tankdestroyers or support the heavies. But infact, are medium tanks a challenge to play, because most of them are relatively all-rounders. They can go almost everywhere on the map, where they're needed. Some armor, not too much, not too fast, but decent speed/manouvreabillity, decent gun, and some hit points. The challenge here is to use those given aspects at the right moments of time, during the battles, and let it depend on the situation