On the Revolt of 1857: One of Yadav's earliest contributions pertained to the 1857 mutiny and the struggle by the Indian Princely states as well as Indian sepoys against the rule of the East India Company. Punjab was traditionally considered to have a pacifist role in the struggle. Yadav presented an argument that stated otherwise. Citing evidence from the mutiny records relating to Ambala, Yadav argued that the revolt first broke out in Ambala, and not Meerut.[8] In a letter that R. C. Majumdar wrote to Yadav, he said, "...the most important article is on the Mutiny at Ambala. That there was an open revolt of the sepoys there on the morning of 10 May, before the outbreak at Meerut, is, I must confess, a news to me and probably to many others. I congratulate you..."[8][9] Yadav has further written on the role of Himachal Pradesh[10] and Haryana.[11] In 2008, Yadav was a speaker at the National Conference on the 1857 Revolt organised by Kurukshetra University and the Indian Council of Historical Research.[12] He has also placed emphasis on the role of Rao Tula Ram.[13]
On Bhagat Singh: Bhagat Singh, a revolutionary of the Indian independence movement, was one of Yadav's chief focuses of interest. Yadav has produced ten volumes on him.[14] In an interview to the national daily The Hindu, Yadav said, "Nobody has tried to understand his ideology and its relevance today. Part of the problem is his writings have been scattered and most of the published work on him is in the vernacular. No doubt the films that have been made on him have succeeded in taking him to the masses but here again the scripts lacked authenticity. That's why we undertook a thorough research and chose English as the medium."[14] In his works, Yadav argues against the revolutionary's supposed "confusion" and has discussed Singh's ideology, tracing his transition from a Gandhian to a socialist revolutionary.[14] Speaking to The Tribune, Yadav said, "Bhagat Singh [...] had the potential of becoming a world leader and this is no exaggeration."[15]
On the First World War: In recent years,[when?] Yadav has worked on the involvement of Indian soldiers in the First World War, focusing mainly on Haryana and Punjab. He was part of the United Service Institution's project India and the Great War 1914-18.[7] Yadav has focused on the recruitment of Indian soldiers, the social and economic implications of the war, and its impact.[16] He examined letters from these soldiers for his research.[17] Yadav explains one of the tactics used for recruitment of soldiers was to shame the young men in front of the village's women, thus forcing their enlistment.[18] Yadav argues that despite the totalitarian nature of the "Great War", the experience of the war brought about prosperity in these regions as "the soldiers returning after WWI started to buy land with the money they made abroad".[19] Speaking to the Sunday Guardian, he further explained, "The exposure to France, England and the other modern societies of Europe led them to question our condition [...] Even while they were still on the frontlines, they began to work to bring education, equality, cleanliness and hygiene to their villages."[20]
Yadav, K.C., Singh, Babar ed. (2007). Bhagat Singh - The Ideas on Freedom, Liberty and Revolution: Jail Notes of a Revolutionary. Hope India Publications. ISBN8178710560
Yadav, K.C., ed. (2008). Mohammad Ali Khan An Autobiographical Discourse. Hope India Publications. ASIN: B0073C0Q3E
^"ICHR Special Projects". Indian Council of Historical Research, New Delhi, India. Archived from the original on 10 January 2014. Retrieved 1 December 2020.