Taktisches Luftwaffengeschwader 51 was named after which first German WWI flying ace?
Taktisches Luftwaffengeschwader 51:  The Wing is named after World War I German flying ace Max Immelmann. Max Immelmann: Max Immelmann (21 September 1890 – 18 June 1916) "PLM" was the first German World War I flying ace.
Max Immelmann