 During the Bangladesh Liberation War, Kundu worked with the artist Quamrul Hassan at the public relations department of the Bangladesh Government-in-Exile at Mujibnagar.In collaboration with Hassan and a group of notable artists namely Debdas Chakraborty, Nasir Biswas, Pranesh Mandal and Biren Shome; Kundu worked on numerous posters and works of art aimed at arousing the newly formed Mukti Bahini liberation army and also raising awareness of the genocide being unleashed by the Pakistan Army on the people of Bangladesh.It was during this period he designed two posters which became among the most recognized
works of art produced during the war.