Many Finnish pilots racked up enormous scores by using basic tactics against Soviet aircraft. The default tactic was the four-plane ""parvi"" (swarm), with a pair flying lower as bait, and a higher pair to dive on enemy interceptors. The Soviet Air Force was never able to counteract this tactic. The top-scoring B-239 pilot was Hans Wind, with 39 kills. Lt Hans Wind, with six other Buffalos of LeLv 24, intercepted some 60 Soviet aircraft near Kronstad. Two Soviet Pe-2 bombers, one Soviet Hawker Hurricane fighter, and 12 I-16s were claimed for the loss of just one B-239 (BW-378). After evaluation of claims against actual Soviet losses, aircraft "BW-364" was found to have been used to achieve 42½ kills in total by all pilots operating it, possibly making it the highest-scoring fighter airframe in the history of air warfare. The top scoring Finnish ace, Ilmari Juutilainen, scored 34 of his 94½ kills in B-239s, including 28 in BW-364.