1/In land countries CSV, what means :
(alle these parameters are setto 0)
I assume yo are reffering to land_units.csv
Those are for setting effects of shore bombardment and air strike loss of effectiveness.
*current AP : for all units, this value is set to 0. What means this value and why 0 ?
this means how many AP unit has left, and you should not bother, as it is recalculated every time a scenario is starting (only has got importance when you are loading the game)
2/Where can I found the ranfe fire and the range reco of air units ? May this value be moddable in the game ?
3/Concerning photos :
The Names of the files are :
I suppose that first number is the type of unit (here 40= Carrier)
Please, what are the 2° and 3° ?
some informations about that will save time for me, I could do research, comparing units, photos, etc to understand the system but time is limited
type of unit, level of unit, country
you can miss country, so the image will be default for all countries without own photos
you can also miss country and level, then the image will be default for all countries at all levels without own photos