Castle is a good alignmenttown type with Knight and Clerichero classes. Castle armies are primarily composed of human men-at-arms, though these towns have also formed an alliance with the griffins and are under the protection of angels. With two types of ranged attack units and two flying creature types available, Castle-based armies are well equipped to quickly engage and defeat their enemies. Castle represent Erathia.
Brotherhood of the Sword – Increases morale by +2 when defending against siege. This is in addition to tavern's +1 resulting in a total morale bonus of +3.
Build the Capitol as soon as possible (preferably in the first week), because having lots of gold is crucial for raising many Archangels.
Obtain and upgrade Portal of Glory by the cost of neglecting other dwellings and mage guild, or even recruiting other creatures.
Divide your Archangels in many stacks, so they can resurrect each other, effectively doubling their numbers.
Because Archangels have the greatest stats among all the 7th tier creatures, they are real die hards (and even when they get killed, they still can be resurrected) thus you may actually horde them much easier than any other 7th tier creatures! High level offensive hero (i.e. Sorsha or preferably Crag Hack) equipped with Archangels will easily overcome more numerous enemies.
Stables can provide heroes +400 movement points per day, which means roughly +20% more movement for heroes.
Cons
Second most expensive town, Tower being the most. Hard to obtain the required 6 gems/week, without a pond or Tower town with a Resource Silo providing them.
The 6th tier dwelling, Training Grounds is the extremely hard to build, as it requires 30 woods.