On the night airship S. S. 40 made a four-hour reconnaissance but having to fly above to avoid ground-fire, found that little could be observed on the ground. A storm on 29 August blew down a 21 Squadron hangar, in which five B.E. 2c's were destroyed and nine damaged. On 3 September the attack on Guillemont was observed by 9 Squadron aircraft. A contact patrol from watched British troops advance on Guillemont and German troops send up distress flares, when they withdrew from the village and the trenches between Guillemont and Wedge Wood. Just after British mirror flashes were seen along the eastern edge of Guillemont and after another half-hour, more were seen at Wedge Wood and the Ginchy road, up to the Leuze Wood–Guillemont crossroads. Further south the 5th Division was seen to be held up before Falfemont Farm, where the crew descended and attacked a German machine-gun detachment holding up the British advance. Later contact patrols revealed that Falfemont Farm was not captured but that to the north ground had been consolidated. The farm was attacked again in the afternoon of 4 September, as 9 Squadron observed and a message was sent to the British artillery when German troops were seen to leave a quarry near the farm and take position in shell-holes nearby, which was followed by a "curtain of fire" falling on the German positions. More reports showed that the left of the 5th Division had reached Leuze Wood. Falfemont Farm was captured in the early hours of 7 September.