Gameplay
The player's objective in Dual Strike is to defeat the enemy army with their own army. Except in some campaign missions with special objectives, there are two ways to defeat an opponent: destroy all of the enemy's units or capture their headquarters. The battle system is turn-based tactics. Two to four armies, each headed by one or two commanding officers (COs), take turns building and commanding units on grid-based maps. Every turn, units, which consist of ground, sea and air units, can move across the different types of terrain and attack enemy units or perform other actions, such as submerging a submarine or resupplying friendly units. Many factors can affect the battle, such as fog of war, a phenomenon that prevents players from seeing enemy units other than those in the visual range of their units; various weather conditions which change the terrain effects of the entire map; and CO powers.
Read more about this topic: Advance Wars: Dual Strike