from what i have read from around 1917 defenses were set up from dover up to sandwich. most were 40 bofors and 3.7 and 4.5 guns. the one dave found looks closer to the 3.7. with a muzzle break...the 4.5 has uprights on either side of the barrel. other than that i cant find who other than a scottish outfit was in the area. it was on a direct course from france to london so could have been along one of the "buzzbomb alleys". perhaps the devs just put a gun there because there was one in the area. here's a couple of sites with pics. might try bombing it next time and see what happens...easter egg??
that is a better pic, dave. hmmmm
http://www.accurate-armour.com/ShowP...7&product=1834
http://www.accurate-armour.com/ShowP...17&product=676