Lemmy came from an educated & military family in England....I think unless you grew up in the 60's as a child like me, his image to some was somewhat unclear.
Lemmy said (retransalted!!!): "Racism is the evil of our world. Being a Nazi means that you have already lost even before you started. You can not win. You have already lost" ... (Süddeutsche Zeitung 2003)
I was born in the early 60s in Western Germany and know, that his music was a no-go for old and young Nazis until the end of the 1980s.
The music of young Nazis changed (as far as I know). Their music came closer to his "hard way of Rock'n'Roll". But his fans in Germany are "normal middle class" people from 15 to 65. A rassitic band would NEVER be allowed to play in "Wacken" (biggest and best known Metal festival in Germany).
About Lemmy's love to German WWII military: Yes! But he was simply "typically British". As some British say: "The Germans had the best equipment and the best looking uniforns ..." (Which isn't true. The strongest yes, but surley not the best reliable or easiest/quickest to service!)
Off Topic ... RAMMSTEIN (as there are many fans in the US too) ...
Ramstein is not only the name of an important US Air Base in Germany. If someone says Ramstein, all people 40+ remember the horrific accident during a military show (70 people died when two Italian planes hit eachother - many were burnt). The musicians added a second "m" - which sounds the same. Yes; Rammstein is a "ram stone".
I remember when I first heard Rammstein in the 1990s. Their singing sounded like "Nazi singing" and the name of the band was a no-go to me. It took me years to understand that they are NOT right winged ...