Combat experience is accumulated for each researchable vehicle separately. It can be spent on researching modules of that vehicle or unlocking the next vehicle in a technical branch.
Vehicles with all modules and subsequent vehicles researched acquire Elite status. All Premium vehicles are Elite. Combat Experience is earned for each Elite vehicle separately. It can be spent on accelerated training of this vehicle’s crew or converted to Free Experience.
After each battle, 5% of Combat Experience is converted to Free Experience, but during some specials this percentage may be increased. You can use Free Experience to research any module or vehicle, and to accelerate perk and skill training for any crew.
Every crew member receives experience equal to the amount you earn in battle. Crew Experience is spent on crew training: improving their major qualification and acquiring new perks and skills.
Modules change and enhance vehicle characteristics, but you need to research them using experience before they can be purchased. Combat Experience accumulated on a researchable vehicle can be used for researching its modules, while Free Experience can be spent on researching any module.
Combat Experience accumulated on a researchable vehicle can be used to unlock the next vehicle in a technical branch, which usually features better characteristics. Free Experience can be used to research any vehicle.
Combat Experience earned on Elite vehicles can be converted to Free Experience using gold. You can use Free Experience to research any module or vehicle.
Combat Experience accumulated on an Elite vehicle can be used to accelerate crew training on this vehicle. Free Experience can be spent on training the perks and skills of any vehicle’s crew.