Alfred Hassler (1910–1991) was an anti-war author and activist during World War II and the Vietnam War. He worked with the U.S. branch of the Fellowship of Reconciliation (FOR USA), a peace and social justice organization, from 1942 to 1974.
In 1942, Hassler was appointed editor of Fellowship, a pacifist publication published by FOR USA. He was subsequently imprisoned for his stance as a conscientious objector during World War II. While in prison, he authored, Diary of a Self-Made Convict.
The following year, in 1958, Hassler was appointed executive secretary of FOR USA.[1] Hassler led FOR USA delegations to Vietnam in 1965 and 1967 during the Vietnam War, during which he began a collaboration and friendship with Thích Nhất Hạnh.[2]
In 1974, Hassler retired from his position with FOR USA. With his wife Dorothy, he co-founded a retirement community in Almeria, Spain. In the 1980s, he returned to New York City.