Lancer regiments are military units that primarily use lances as their main weapon. Originating in the 16th century, these cavalry units were known for their speed and mobility on the battlefield. Lancers typically wore distinctive uniforms, often featuring a unique headgear called a shako, which helped to identify them during combat. Throughout history, lancer regiments have been part of various armies, including those of Britain, France, and Poland. While their role has evolved, they were once crucial in charges against infantry and other cavalry. Today, many lancer regiments serve in ceremonial roles, preserving their historical traditions.