The biggest fighting happened at Bolands Mills where Éamon de Valera had his men open fire on British soldiers called "Sherwood Foresters" while they landed in the city. The shootings here killed about 200 people and wounded several more. St. Stephen's Green was a big part of the fighting as well where the Irish lost a lot of men. After six days the Irish were exhausted and were being shot at by huge artillery pieces mounted onto a British ship called HMS Helga. The General Post Office was badly hit and soon the Irish surrendered. Sixteen of the Irish leaders were shot by firing squad after the Rising.