The second attack, three hours later, was by Lancaster aircraft of 1, 3, 6 and 8 Groups, 8 Group being the Pathfinders. By now, the thousands of fires from the burning city could be seen more than away on the ground, and away in the air, with smoke rising to . The Pathfinders therefore decided to expand the target, dropping flares on either side of the firestorm, including the "Hauptbahnhof", the main train station, and the "Großer Garten", a large park, both of which had escaped damage during the first raid. The German sirens sounded again at 01:05, but as there was practically no electricity, these were small hand-held sirens that were heard within only a block. Between 01:21 and 01:45, 529 Lancasters dropped more than 1,800 tons of bombs.