Tank Commander,
The
X
ST-II
is a heavy tank that will get you on a enemy-destroying roll. It features a double barrel gun so you can play around with its versatility: use a single shot to shoot at enemies with a lower HP, or take advantage of the auto-reloader to shoot at your enemies — twice!
Highlights:
- [In-game] Enjoy free x5 EXP daily missions and discounts on credit costs of vehicles as you work your way to the Tier X.
- [Premium Shop] Looking to accelerate your progress? Look for our Fast on Track Bundles!
The missions are at the bottom of the article. Check there for mission details!
Attractive 
Sale ends: - Mission: On Track - Crew XP
- Mission: Top of the Tree - Damaging Push
- Mission: Top of the Tree - Push Through!
- Mission: On Track — ST-II
- Tech Tree Discounts
Description:
Play a battle and be among the top 7 EXP earners on your team.
Conditions:
- Must use the following vehicles:
- Random/Grand Battles only
Rewards:
x2 Crew EXP
x2 Crew EXPDescription:
Block 20,000 HP of damage over any amount of battles
Conditions:
- Must use the following vehicles:
- Random/Grand Battles only
- 10 times per account only
Rewards:
- 6,500
1x Personal Reserves: +50% XP (Duration: 1 hour)
Description:
Block 200,000 HP of damage in any amount of battles
Conditions:
- Must use the following vehicles:
- Random/Grand Battles only
- Once per account only
Rewards:
- 20,000
Description:
Play 5 battles and be among the top 10 XP earners on your team.
Conditions:
- Must use the
X
ST-II
- Random/Grand Battles only
- Repeatable
Rewards:
- 1x Personal Reserves: +300% Crew EXP (Duration: 1 hour)
1x Large Repair Kit 
1x Large First Aid Kit
1x Automatic Fire Extinguisher