Battle of the Isle of Portland

The Battle of the Isle of Portland took place in 1653 during the English Civil War. Royalist forces attempted to seize control of the strategic Portland Harbour, a vital naval site. The Parliamentarian defenders, led by Colonel Robert Seaman, successfully resisted the attack, using fortifications and artillery effectively. This battle was significant because it helped maintain Parliament’s control over the area and prevented Royalist dominance in the region, ensuring the security of the Royal Navy’s access and protecting key maritime routes.