A battlefield is a designated area where armed forces engage in combat during a war or conflict. It can vary in size and terrain, including open fields, forests, or urban environments. The layout of a battlefield often influences military strategies and tactics used by opposing forces. Battles on a battlefield can involve various military units, such as infantry, cavalry, and artillery. Key elements include fortifications, supply lines, and command centers, which play crucial roles in determining the outcome of engagements. Historical examples of famous battlefields include Gettysburg and Waterloo.