Hi, friend.

I've moved your topic.

As I know, there is formula to calculate fortress deff by sending small troops (e.g. 100 pally). Experienced players can help you with that.

As for your own, in my opinoin, most clear way - move your troops in/from catacombs - you will see real deff/off number.

Are you asking about Troop pages in beacon/fortress and seeing your reinforcements. If so the number will never be correct as it is hard to code some calculations real time when they change so much in game. You will view your own troops as correct power but other players troops you view when having reinforcements, or beacon/fortress troop pages will be viewed as base stats. That means level 1 lost arts, no paragon, no hero equip/gear, no dragon bonus, no crystals,  and no 10-20% enhancers.