Mastery badge
A badge awarded for a single battle whose base experience beats a set share of everyone playing that vehicle, from third class up to Ace Tanker.
Also known as Marks of Mastery, ace tanker, ace, mastery, class 1.
Where marks measure a run of battles, a mastery badge measures one. The game takes the base experience earned in that battle, before premium account, boosters and any multiplier, and compares it against the distribution for that vehicle on the region.
- Third class: better than half of that vehicle's players
- Second class: better than 80 percent
- First class: better than 90 percent
- Ace Tanker: better than 99 percent, the best percent of battles fought in it
Using base experience rather than damage means the whole battle counts: damage, kills, spotting, capture and defence all feed the experience formula, so an Ace can be earned by a scout that dealt little and lit everything.
The thresholds are recalculated periodically per region, so an Ace on a rarely played vehicle asks for less than an Ace on a popular one.