You “master” a tank when you earn more Base XP in a single battle than the highest average Base XP earned in a single battle by 99% of players of that same tank within the past seven days. Simply put, just try and beat the average. This earns you 3x
Tank Mastery emblems!
If you attain mastery in one of the tanks below while the Tank Mastery mission is active, you also get a +100% (2 hours) 
Free XP Personal Reserve!
- AMX ELC bis Mastery
- Indien-Panzer Mastery
- O-Ni Mastery
- T25/2 Mastery
Rewards:
- 1x Personal Reserves: +100%
Free XP (2 hours) - 3x
Tank Mastery emblems (restricted to tank)
Free XP (2 hours)Conditions: Get the “Ace Tanker” Mastery Badge in an
V
AMX ELC bis
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VIII
Indien-Panzer
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
O-Ni
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
T25/2
Restrictions:
- Grand and Random Battles Only
- Once Per Account
- VK 28.01 Mastery
- T-54 Mastery
- 113 Mastery
- Charioteer Mastery
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VI
VK 28.01
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IX
T-54
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
X
113
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VIII
Charioteer
Restrictions:
- Grand and Random Battles Only
- Once Per Account
- M5A1 Stuart Mastery
- T54E1 Mastery
- Black Prince Mastery
- T28 Prototype Mastery
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IV
M5A1 Stuart
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IX
T54E1
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
Black Prince
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VIII
T28 Prototype
Restrictions:
- Grand and Random Battles Only
- Once Per Account
- T49 Mastery
- Leo Mastery
- Tiger II Mastery
- AMX AC mle. 46 Mastery
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IX
T49
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
Leo
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VIII
Tiger II
Restrictions:
- Grand and Random Battles Only
- Once Per Account
Rewards:
- 1x Personal Reserves: +100%Free XP (2 hours)
- 3xTank Mastery emblems (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
AMX AC mle. 46
Restrictions:
- Grand and Random Battles Only
- Once Per Account
