Here are some of the things that increase your tank's defense:

- Honor
Amongst the attributes you get from the Honor after you reach level 21 (enhance the defense for all your units, including Assault Cannon and Tanks), the higher your Honor, the greater the defense is.
- The VIP
One of the advantages that you get from VIP after you reach level 9 (enhance the defense for all your units, including Assault Cannon and Tanks), the higher your VIP, the greater the defense is.
- Equipment and Widgets
In particular, armor and boosts give you defense points for Assault Cannons and Vehicles (Iron blood-Armor Piercing Shells), and they are the most powerful ones.
- Research
Military Research, Iron Blood Relic and Iron Blood Relic Army, as well as the technical teacher at the Research Institute, there are attributes that increase the defense of Assault Cannon and Tanks.
- Commander's skills
Special attributes to raise the level of defense for Assault Cannon and Tanks. You can find it under the item (Battle).
- General Skills
The active and passive skills, hacking equipment, and the elite army for some generals increase the defense of the Assault Cannon and Tanks such as Captain Aldo, Commander Jafar, Li Wenzheng, and Commander Igor.
- Unlock the base and defense benefits
Grant items that increase the defense points of the units, such as the Advanced Defense Bonus (for 12 hours).
- Activate some decors, such as The Moon Palace Skin.
- Activate some of the base protection, such as Mirage Tank, Apocalypse Tank, and Flying Fortress.