On 26 November 1944, a Me 262A-2a Sturmvogel of III/KG51 based at Hopsten/Rheine near Osnabruck was the first confirmed ground-to-air kill of a jet combat aircraft. The 262 was shot down by a 40/L60 40mm Bofors gun of B.11 Detachment of 2875 Squadron RAF Regiment, at the RAF forward airfield of Helmond, near Eindhoven. Others were lost to ground fire on 17 and 18 December when the same airfield was attacked at intervals by a total of eighteen Me 262s and the guns of Nos. 2873 and 2875 Squadrons RAF Regiment damaged several, causing at least two of them to crash within a few miles of the airfield. In February 1945, Sergeant Pollards's B.6 gun detachment of 2809 Squadron RAF Regiment shot down another Me 262 over the airfield of Vokel. The final appearance of Me 262s over Vokel was in 1945, when yet another fell to 2809's guns.