Good Info - but I disagree with some of the Russian sources as if you tally up some of their claims they exceed the actual amounts of aircraft that were in theater (Especially true for the F-80). Again I doubt Soviet pilots were flying La-11 to intercept B-26s. They were there for one thing - fly Mig-15s. Here a breakdown of volunteer units in Korea and there were little La-11s when compared to the Mig-15.
I didn't say Soviet claims in Korea were all correct, I'm not relying on them. The examples I gave are specific 351st Regiment (La-11 equipped night unit) claims that match encounters or losses in US original records not only the same date, but same general time and place.
The linked list is of so called Chinese Volunteer units, really just regular units of the PLAAF (it's from Volkovskiy "The War in Korea"; it says it includes NK units but doesn't list any, though there were several). Note the list includes 2nd Fighter Division, the Chinese La-11's encountered Nov 30 '51. But the 351st Fighter Regiment, La-11 night fighters, was Soviet AF, not Chinese. Most of the Communist air opposition from Nov 1950 until 1953, when the Chinese and NK's became an actual majority, was regular units of the Soviet AF's (VVS tactical, PVO air defence, and VMF landbased naval), again just labelled "volunteer". The 351st Regiment was the only La-11 unit among the Soviet units as the 2nd FAD was among the Chinese, but the 351st had some verifiable victories while flying the La-11 (at night in Korea, plus a handful against Nationalist Chinese a/c before the KW that can be verified), and suffered no La-11 combat losses per Soviet accounts, nor did the US claim any of the 351st's, ie Soviet piloted, La-11's.
My sources on 351st and its specific claims are Russian language published and archival, non-internet, but for those of the 'links=truth' persuasion here's a translation (by same guy who translated the Volkovskiy excerpts, Cookie Sewell) of a 1993 Russian magazine article about their night fighter ops (I believe it has some errors, and info since updated by the same author Igor Seidov, but it's a reasonable overview).
Shield of the Night
Joe