In the Rising, Markievicz fought in St Stephen's Green, where on the first morning—according to one account—she shot a member of the (unarmed) Dublin Metropolitan Police, Constable Lahiff, who subsequently died of his injuries. Other accounts place her at City Hall when the policeman was shot, only arriving at Stephen's Green later. It was long thought that she was second in command to Michael Mallin, but in fact it was Christopher "Kit" Poole who held that position. Markievicz supervised the setting-up of barricades on Easter Monday and was in the middle of the fighting all around Stephen's Green, wounding a British army sniper. Trenches were dug in the Green, sheltered by the front gate; however, after British machine gun and rifle fire from the rooftops of tall buildings on the north side of the Green including the Shelbourne Hotel, the Citizen Army troops withdrew to the Royal College of Surgeons on the west side of the Green.