 Nyora kupfuurira kweiyi ndima - Pashure pechikoro chapamusoro, Erdman akadzidza kuvaka paYunivhesiti yeIllinois paUrbana-Champaign. Akabatana neUnited States Army Corps of Engineers muna 1943, uko akabatsira kuvaka Remagenbhiriji repontoni. Akadzokera kuzvidzidzo zvake pashure pehondo, achigamuchira B.S. muScience Science kubva kuYunivhesiti yeWisconsin Madison muna 1946. 