Fire and movement can be performed by any unit made up of at least two soldiers. The first part of the military unit suppresses the enemy by firing from behind cover, while the second advances. After a short time, the advancing unit will halt behind cover and open fire, allowing the first unit to advance. The two parts of the unit will repeat the cycle until the objective is met. Enemy suppression can also be achieved with direct and/or indirect fire from combat support units. Artillery, mortars and armor are a few examples of combat support units often used in fire and movement.