An infantry unit is a group of soldiers trained to fight on foot. These units are essential for ground combat and often engage in direct confrontations with enemy forces. They use a variety of weapons, including rifles and machine guns, and are trained in tactics for both offensive and defensive operations. Infantry units can vary in size, from small squads to larger battalions. They often work alongside other military branches, such as artillery and armor, to achieve strategic objectives. Their versatility allows them to operate in diverse environments, including urban areas, forests, and open fields.