For his club 1. FC Kaiserslautern he scored an unequaled 336 goals in 321 league and cup matches. Walter debuted in the first team at the age of 18 in 1942 as an outside left in a 7–1 rout of SV Waldhof Mannheim.
Walter's remarkable goal-scoring record for 1. FC Kaiserslautern, with 336 goals in 321 matches, is highlighted. His debut for the club came at age 18 in 1942 as an outside left during a 7–1 victory against SV Waldhof Mannheim.