After the World War II, he played an instrumental in the re-establishing of the Automobilclub von Deutschland (AvD), and getting motor racing underway in Germany.

[3] In return the following season, but without much success, although he became to first German driver to complete in England following the war, when he drove his Monopoletta-BMW at Brands Hatch in the August Bank Holiday meeting.

[5][6] Back on the track, Walter scored his greater result when he and Richard Trenkel took fourth place in the 1953 Internationales ADAC-1000 Kilometer Rennen Weltmeisterschaftslauf Nürburgring, a round of the World Sportscar Championship.

[7] When in the Autumn of 1953, DKW created their new motor sport department, and Walter was one of the trio of drivers signed to tackle the European Rally Championship.

[8] He continues with DKW for the next couple seasons, when 1955 he scored his first outright victory outside of Germany, when he wins Norway’s Viking Rally.