So what is this "Mastery" stuff?
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 a
Tank Mastery emblem!
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!
Tank Mastery Missions
Aug. 4 – Sept. 5, 04:20 PT (07:20 ET)
- WZ-132-1 Mastery
- M4A3E8 Sherman Mastery
- KV-4 Mastery
- Somua SAu 40 Mastery
Rewards:
- 1x Personal Reserve for
+100% Free XP (2 hours) - 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
X
WZ-132-1
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve for+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in an
VI
M4A3E8 Sherman
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve for+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VIII
KV-4
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve for+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IV
Somua SAu 40
Restrictions:
- Once Per Account
- Random Battles Only
- Covenanter Mastery
- T-34-1 Mastery
- AMX 50 B Mastery
- Ikv 103 Mastery
Rewards:
- 1x Personal Reserve for+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
V
Covenanter
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
T-34-1
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve for+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in an
X
AMX 50 B
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
V
Ikv 103
Restrictions:
- Once Per Account
- Random Battles Only
- VK 16.02 Leopard Mastery
- Sherman III Mastery
- ST-I Mastery
- Sturer Emil Mastery
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
V
VK 16.02 Leopard
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
V
Sherman III
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IX
ST-I
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VII
Sturer Emil
Restrictions:
- Once Per Account
- Random Battles Only
- AMX 13 105 Mastery
- Pz. Kpfw. III/IV Mastery
- M6 Mastery
- Object 704 Mastery
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
X
AMX 13 105
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
V
Pz.Kpfw. III/IV
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
VI
M6
Restrictions:
- Once Per Account
- Random Battles Only
Rewards:
- 1x Personal Reserve+100% Free XP (2 hours)
- 1xTank Mastery emblem (restricted to tank)
Conditions: Get the “Ace Tanker” Mastery Badge in a
IX
Object 704
Restrictions:
- Once Per Account
- Random Battles Only
