Field cannons are artillery pieces designed for use in the field during battles. They are typically lighter and more mobile than other types of cannons, allowing armies to transport them easily. Field cannons were crucial in many historical conflicts, providing firepower to support infantry and cavalry units. These cannons often fired explosive shells or solid shot, making them effective against enemy troops and fortifications. Notable examples include the Napoleonic cannons used during the Napoleonic Wars and the Civil War artillery that played a significant role in battles like Gettysburg. Their design and use evolved over time, influencing modern artillery.