Rocket artillery refers to a type of artillery that uses rockets instead of traditional shells to deliver explosive payloads. This system is designed for long-range bombardment and can launch multiple rockets in a short period, making it effective for saturating a target area. Notable examples include the Katyusha rockets used during World War II and modern systems like the HIMARS. The primary advantage of rocket artillery is its ability to cover large areas with firepower, providing support for ground troops and disrupting enemy positions. These systems can be mounted on vehicles for mobility, enhancing their strategic deployment on the battlefield.