G. B. Singh

Colonel G. B. Singh is a retired U.S. Army officer and the highest-ranking Sikh to serve in the U.S. Army while wearing a turban. He is known for his courage, optimism, and peaceful demeanor in the face of discrimination.

Singh joined the U.S. Army in 1979 and served as a colonel. He was one of a few Sikhs allowed to keep their articles of faith after a 1981 policy change that prohibited soldiers from wearing "conspicuous" clothing or having certain hairstyles or beards. Singh invented safe ways for Sikhs to use gas masks and helmets to combat the ban. He retired from the U.S. Army in 2007.

Singh wrote Gandhi: Behind the Mask of Divinity, a book that challenges the image of Gandhi as a nonviolent leader of Indian independence. Singh's book argues that Gandhi's portrayal as a great leader was based on deception and irrationality, and that he emulated racism from Hindu caste ideology.