Hartmann also flew solely against the Soviets. Lots of German aces racked up huge numbers of kills against the Soviets; the top 3 aces of all time were Erich 'Bubi' Hartmann (352), Gerhard Barkhorn (301), and Guenther Rall (275). The highest scoring ace in Western Europe/North Africa was Hans-Joachim Marseilles, who scored 158 kills against the British and Americans, whom the pilots in the Luftwaffe considered much more skilled than the Soviets (however, the Soviets had the highest scoring Allied ace, Ivan Kozhedub with 60 kills).
"I Flew for the Fuhrer." Read it a few years back.
Wrong
The 'u' has an umlaut, meaning the correct spelling with an American keyboard would be 'Fuerher' unless you type out the unicode.
'I Flew for the Fueher' is an amazing book BTW. It's really a collection of memoirs, so you see what his feelings were as these events were going on. It starts before the war, goes through his enlistment in the Luftwaffe, his training, and then finally his... activation I guess you'd call it? He flew first in the Battle of Britain with Jagdgeschwader 52, among greats such as Krupinski, etc... (all the pilots I listed above flew with JG52 at one point or another). The Geschwader then transferred to Russia for Operation: Barbarossa, and after taking part in the initial attack and flying there for a short amount of time (he didn't score any kills in Russia) he was transferred to Jagdgeschwader 1. JG1 at this time flew Reich Defense operations in Northern Germany. In time Knoke became 'Staffelkapitaen' (head of a Staffel; 12-16 aircraft) of 2./JG1 (part of I/JG1). In May 1943 I/JG1 became part of a new Geschwader and was designated II/JG11, which made Knoke's Staffel 5./JG11 (the picture in my avatar is of this group in summer '43 IIRC). Knoke's 'Fighting 5th' became one of the more successful RVG Staffels during this period. As the war went on, however, JG11 took extremely heavy casualties. Knoke was eventually posted to Gruppekommodore of III(I think...)/JG1 in the later half of 1944, but was crippled by a roadside bomb and wasn't able to assume this post. He's actually lucky, as JG11 was decimated in the famous Operation Bodenplatte not long after.
It really is an amazing book.