The number of 'beefsteaks' was estimated to be large in some cities, especially in northern Germany, where the influence of Gregor Strasser and Strasserism was significant.[47] The head of the Gestapo from 1933 to 1934, Rudolf Diels, reported that "70 percent" of the new SA recruits in the city of Berlin had been communists.[48] This is evidenced further by historians, "As for the prior youth group memberships, nearly half of the SS members and nearly one-third of the instant stormtroopers were with the Free Corps, vigilantes, or militant veterans' groups during their first 25 years of life.