Most of this information is taken from 프로성능충 from Ruliweb's GFL forum. Again, if you speak Korean, you're best off reading their sources rather than ours, but the benefit we provide is that we're giving this information in English.

Base chance of great success is (Average Echelon level * 0.45)+15

First off, this is primarily made from the Korean sources on Namu Wiki for GFL, which frankly, is a better resource if you can actually read Korean. Their notes are much more complete, and most of this is based on their work. With that out of the way, let's get down to business.

It gets brought up enough that sure why not. Basically all battlefield calculations consists of:

Because shotguns were implemented and people kept asking how armour and such worked. Also because night battles have been a thing.

And this is formations 101, or "How not to get your t-dolls slaughtered for showing up in a terrible formation." This will cover the absolute basics, with more detailed lessons such as compositions to come later. Most of this information is based largely on Korean server meta and information.

Repair times: