Answer
The Hòa Hảo commander personally hostile to Thơ was Ba Cụt. Ba Cụt was a powerful and charismatic Hòa Hảo leader who was a rival to Thơ. Ba Cụt opposed the French colonial government and was a supporter of Hồ Chí Minh and the Việt Minh. He was killed in action in 1951 during the First Indochina War.