Is it wrong? It should be "Sieg? Heil"
"Sieg Heil" is a German phrase, which is "Hail Victory" (Long Live Victory). The German Nazis adopted this phrase and it became one of their most widely used slogans of the time (often used to accompany the Nazi salute). As a result, after World War II, white supremacists in Europe, North America, and elsewhere adopted the term.