There are 16 capitals on the map and each gives you a whole state to draft, 200 x 200 miles. It is possible to take a level 16 by yourself but you need a high star set and a lot of historic heroes and a few historic cities to launch the waves.
They allow you to launch 200,000 waves (250,000 with war ensign).
200 x 200 Miles
99 miles in any direction
141.4 miles at the furthest point
As far as I know only the pikemen and swordsmen alternate in level 16 historic cities on new servers. I'm not exactly sure how the rotation works, as I have seen a level 16 historic city keep its configuration for weeks without anything alternating, but a number of players have said to me that it eventually changes between pikemen and swordsmen
|Pikemen / Swordsman||1,016,665|
Its best to try to spam out as much walls as possible
If you camp all your loyalty waves, make sure to send at least 40, or more if you can. After the city is broken and its troops wiped it varies how many loyalty waves it takes to capture it. Sometimes only 30, but some times over 40. Also make sure you have a city ready to teleport to the historic city if you need extra loyalty waves.
Surprisingly its actually possible to take a capital by yourself, however you need a very, very high star set and multiple historic heroes, about 20. Your main problem will be having enough free slots for your troops to march so forget about spamming out the wall defences, your losses will be very high anyway. Forget about trying to run loyalty of a city close to the target, the regeneration rate is just too quick so you need to camp all the loyalty waves as well as the breaker waves.
Wave 1 to 18 - 55,000 warriors/70,000 pikemen (700 attack hero) - Kills cavalry
Wave 19 to 28 - 1,000 warriors/4,000 swordsmen/1,000 pikemen/4,000 cavalry/176,000 archers (800 attack Historic Hero) - Kills swordsmen
Wave 29 to 32 - 187,000 archers (800 attack historic hero) - Kills Archers
Wave 33 to 34 - 1,200 workers/12,000 warriors/3,000 archers/50 rams/170,000 ballista (800 attack historic hero) - Kills Warriors
Wave 35 and on - Loyalty waves, 70,000 archers/30,000 warriors