Hi,

I'm currently at a ffh .25 game with Doviello and find the battlemaster upgrade-option a bit overpowered. When upgrading an axeman to battlemaster with the special ability it doesn't cost any money. This way I'm able to build axeman in 3-4 turns and upgrade them to battlemaster at no costs which else would take the double time to build. In .23 the upgrade costs are the same as normal upgrading.
Is that intentionally or a bug?

Bye,
DoD

Sounds like a bug to me. You should report it in the bug thread here:

http://forums.civfanatics.com/showthread.php?t=245949

Yes, sir :)