His books dealt primarily with the history of Indian aviation and armed services.
[1][2] Sapru died on January 28, 2022[1][2] at his Bose Garden residence in Bangalore,[1][2] a week after his 82nd birthday.
[4] In 1987, he received the Press Foundation of Asia-Mitsubishi Award for "Asian Journalist of the Year" (awaiting citation).
Skyhawks, published in 2006, is about the four men who were the first Indians to fly military aircraft, while serving in the First World War.
[5] The book is described as reflecting "an enormous amount of research ... (where) there was hardly any material or documentation available either in the IAF's archives or the Defence Ministry's records, as this narrative pertains to an era even before the Royal Air Force.