Six raids followed at the end of September. These included the first raids on England by the enormous "Zeppelin-Staaken Riesenflugzeug" of "Riesenflugzeug-Abteilung" (Rfa) 501. On 24 September 16 Gothas set off and 13 reached England, most bombing Dover and other targets in Kent, with only five reaching London. This coincided with an unsuccessful Zeppelin attack on the Midlands. The following night 15 Gothas set out, with similar results, only three aircraft reaching London. One of the bombers came down in the North Sea, probably the victim of a Sopwith 1½ Strutter flown by Douglas Bell and George Williams of 78 Squadron. On 28 September 25 Gothas and two "Riesenflugzeuge" took off but most turned back due to adverse weather. Three people were wounded and £129 damage was caused, for the cost of three Gothas lost and six damaged on landing. The following night seven Gothas and three "Riesenflugzeuge" took off, killing 40 and injuring 87 for the loss of one aircraft. By this time the population of London was thoroughly alarmed, with up to 300,000 people seeking shelter in Underground stations and others leaving London to sleep in whatever accommodation was available, some in fields. On 30 September 11 Gothas set off to raid London and on 1 October 18 took off, eleven reaching England. Over 14,000 rounds were fired by British anti-aircraft guns without scoring a hit. By now shells were in short supply and many of the guns had fired so many rounds that their barrels were worn out. The Government reallocated new 3-inch (76.2 mm) guns from arming merchant ships against submarines, to the defence of London. The barrage was also proving hazardous to those on the ground, in that week eight people had been killed and another 67 injured by falling fragments.