Wurger is correct, but this was a common practice long before the Third Reich, and continued, mostly in Germany, through the '60s before it fell into disuse. Those honored were invariably aviation oriented, mostly associated with soaring.
I've flown in sailplanes in Germany with pioneers Gunther Groenhoff and Heini Dittmar's names on them, and saw Rudy Opitz memorialized on another.
Rudolf Opitz was a champion glider pilot in 1940 employed as a test pilot by DFS in Darmstadt. He was appointed instructor on cargo gliders and flew a DFS-230 glider in the attack on the fort Eben-Emaël in Belgium. From 1941 onwards he was employed as a test pilot at the Lutwaffe test center at Rechlin near Berlin where he was involved in the development of the Messerschmidt Me 163, being ordered to fly in combat. Post war, he became a test pilot for Pratt & Whittney, including flying the B-17 with a turbine in the nose. When the Ho-IV high performance flying wing sailplane was turned over to Miss. State U. Aerophysics for evaluation, he personally rebuilt it and flew it in the US National Contest, then participated in some flight tests there.
While at Cranbrook, I was allowed to fly a Slingsby Tutor named "Prince Charlie" as he had soloed in that plane.
There are pix of that Grunau Baby "Otto Brauligam," (diplomat with the German Foreign Office before, during, and after National Socialism) being flown by a German club in pre-WWII Egypt.