Otto Braun (28 January 1872 – 15 December 1955) was a German Social Democratic politician who served as Prime Minister of Prussia for most of the time from 1920 to 1932. After the Nazis seized power in 1933, Braun went into exile in Switzerland.
Born in Königsberg, East Prussia, as the son of a railway employee, Braun attended Volksschule and then completed an apprenticeship in lithography. In 1888, he joined the Social Democratic Party, illegal at the time. He advanced in the typical manner for a local functionary: chairman of the local Arbeiter-Wahlvereins (the legal front of the party) and later publisher, editor and printer of the party newspaper Volkstribüne (later Königsberger Volkszeitung). In 1904, he was one of several social democrats charged with high treason for smuggling pamphlets calling for the toppling of the Tsar into Russia but was not found guilty, due to inconclusive evidence. Braun was active in supporting the rights of farm labourers in East Prussia, dominated by large landowners. From 1909-20, he was a member of the board of the Deutscher Landarbeiter-Verband, a farmworker association, which he had co-founded. He also became an expert on agricultural issues within his party. Braun rose to chairman of the East Prussian Social Democratic Party, in 1911 became a member of the board of the national SPD and in 1913 was elected to the Prussian House of Representatives.
Otto Braun (28 September 1900 – 15 August 1974) was a German Communist with a long and varied career. His most significant role was as a Comintern agent sent to China in 1934, to advise the Communist Party of China (CPC) on military strategy during the Chinese Civil War. At the time Braun adopted a Chinese name, Li De (Chinese: 李德; pinyin: Lǐ Dé); it was only many years later that Otto Braun and "Li De" came to be known as the same person.
Otto Braun was born in Ismaning, Upper Bavaria, near Munich. Even though his mother was still alive, he grew up in an orphanage.
He enrolled at a teachers' training college in Pasing in the Munich area. In June 1918 Braun was drafted into the ranks of the Bavarian army, part of the Imperial German Army, but the First World War ended before he could face combat duty.
After the armistice he went back to complete his studies at the teachers' training college. However, he did not take a job as a primary school teacher. Rather, he joined the newly founded Communist Party of Germany (KPD), embarking on what would be a lifelong vocation and career, and traveled widely, mainly in North Germany.