When you have got iron working fully researched the intelligence can reduce damage done by an attacker by about 50% which is pretty handy in any circumstances! I have gotten 1 full Damage Reduction Hero in my last 2 servers now and it has helped more than you can believe. Unfortunately this guide does not contain any reports for evidence (please PM any contributions) though it does have valid and useful information that I'm sure any player can learn from.
So, what is a War Hero and why would you build one? Well, the reason you would build a war hero is for defence against attacks. They will be a pain in the ass to make but when done they are monstrous to come up against.
Here is a chart showing the sort of numbers you are looking at when building a War hero.
Click Here for a chart of the intel needed per troop for maximum damage reduction
Now if you are running in CD you want to protect your layers, since they won't be protected very well relative to in 5k. for maximum damage reduction of every troop you need a hero with 850 intelligence. I would also get it's attack around 250 if possible - remember that the highest attack hero in the city defends so any lower and you are gunna have to have really sh1t heroes for this hero to do anything!
For Mech D the specs are alot lower. The nature of Mech D means your gunna have a tonne of balli so get your Intelligence up to 163 (where max damage reduction is for Balli). I would suggest this hero being at least instant warrior.
As you can probs figure from the numbers you need it is probs easier to go for the Mech D war hero 1st. The type of hero you need to build one of these sucessfully and efficiently is going to be a hybrid Mars hero of Attack and Intel. Unless it's base attack and intel add up to around 150 I wouldn't even bother because of the troops/resources that go into building a hero this big. Because you should already have 220/insta warr you shouldn't need any holy waters to make this hero unlike the famous way to build insta Poli heroes.
Very, very few people will be able to level a hero to this level but I figure it is worth having the info out there even if it is just food for thought
If you are still not convinced check out This
The first column losses of 25k could be 1-10 waves of SBs. Whilst the bottom columns replicate the multiple huge losses from something as big as mech wave or jaq attack.
This is just a guide as to what a War hero is and what it does. If you have any additional information or criticism, whether it be positive or negative I would appreciate it if you could PM it rather than through replying on the thread where I would love to answer any questions. Thanks

