An infantry division is a large military unit primarily composed of foot soldiers, known as infantry. These divisions are designed to engage in ground combat and are typically organized into several brigades, which include various support units such as artillery, engineers, and logistics. Infantry divisions are essential for capturing and holding territory during military operations. Each infantry division usually consists of around 10,000 to 20,000 soldiers, depending on the country and its military structure. They are trained to operate in various environments and can be deployed for different missions, including combat, peacekeeping, and humanitarian assistance. The effectiveness of an infantry division often relies on its coordination with other military branches, such as artillery and air support.