Ananta Singh was a prominent figure in the Indian independence movement, particularly known for his revolutionary activities in Bengal during the early 20th century. He emerged as a key leader of the Chittagong group, a revolutionary organization that aimed to overthrow British rule through armed struggle. Singh's early life was marked by a growing resentment towards colonial oppression, which fueled his commitment to the cause of Indian independence. He actively participated in various nationalist activities, gradually becoming a central figure in the revolutionary circles of Chittagong.

His most significant contribution was his involvement in the Chittagong Armoury Raid of 1930. Along with other revolutionaries, he planned and executed a daring raid on the police armoury and the auxiliary forces armoury in Chittagong. The objective was to seize weapons and ammunition to initiate an armed uprising against the British government. While the raid itself was successful in acquiring arms, the revolutionaries were ultimately unable to sustain their rebellion due to the overwhelming response from British forces. Following the raid, Singh went underground, evading arrest for several years.

Eventually, he was apprehended and faced trial for his role in the Chittagong Armoury Raid. He was convicted and sentenced to life imprisonment. During his time in prison, Singh remained steadfast in his beliefs and continued to inspire other inmates with his revolutionary zeal. After India gained independence in 1947, he was released from prison and dedicated the remainder of his life to social work and community development. Ananta Singh's contribution to the freedom struggle is remembered as a testament to the unwavering spirit of Indian revolutionaries who fought for independence from British rule.