Cadet Soldiers

• Unit HP : 30
• Class : Soldier
• Great Against to : Artillery, Carrier, Air Ship
• Weakness for : Tank, Gunboat
• tips: if your enemy units are Artillery with no tank (land unit) or there are Carrier with no Gunboat (naval unit), this is the best choice for the battle.

Cannon Artillery

• Unit HP : 40
• Class : Artillery
• Great Against to : Tank, BattleShip, Bomber
• Weakness for : Soldier, Carrier
• tip: if your enemy units are tank with no soldier (land unit) or there are battleship with no carrier (naval unit), this is the best choice for the battle.

Vintage Tank

• Unit HP : 50
• Class : tank
• Great Against to : Soldier, Gun Boat, Air Fighter
• Weakness for : Artillery, BattleShip
• tip: if your enemy units are Soldier with no Artillery (land unit) or there are Gun Boat with no BattleShip (naval unit), this is the best choice for the battle.

See this scissor, paper , rock table for more info on what the best way is to use your units.