Although 2nd London Division suffered few casualties at Aubers Ridge, its gunners had learned a sobering lesson about the impossibility of suppressing strong defences with inadequate guns and shells. On 11 May the division was redesignated &lt;a href="47th%20%281/2nd%20London%29%20Division"&gt;47th (1/2nd London) Division&lt;/a&gt;, and on the night of 14/15 May it took its place in the line for the Battle of Festubert. The guns were already in place, with 47th Divisional Artillery operating under the control of 7th Division. Despite the continuing shortage of ammunition, the plan this time was for a long methodical bombardment. On 13 and 14 May the field guns carried out three two-hour deliberate bombardments each day, attacking the wire with slow observed fire or keeping the enemy communication trenches under fire. At night they carried out intermittent bombardments of the communication trenches and defences, to stop supplies being brought up and to prevent repairs being carried out. The guns fired about 100 rounds per day. During 15 May feint bombardments mimicking the moment of assault were carried out, but the actual attack was made after dark with some success. The fighting went on for several days, and 47th (2nd L) Division made its own first attack on the night of 25 May. The leading brigade captured the German front and support trenches, but were then pinned down by accurate German artillery fire and could advance no further. This effectively ended the battle. The heavy rate of fire during the battle was too much for the old 15-pdrs: by 26 May, 11 out of 36 guns in the division were out of action.