Colonel Yogander Singh (retd) is a retired Indian Army officer and military historian, with special focus on Haryana. He has written several books, most prominent among them being 'Hal Wa Samshir: Politico-Military History of Haryana'. 'Future Ready Indian Army' and 'Effective Deterrence: Thoughts on India's Security Policy and Structures in the Twenty-first Century'.His latest books are 'Century of the Locust' & 'Century of the Raj' in two volumes detailing the history of 18th and 19th century Haryana respectively in a comprehensive manner.