Ganapathy is an Infantry officer of the 8th Gorkha Regiment. He has served in various operational terrains. He spent two years as a Research Fellow with the Centre for Land Warfare Studies (CLAWS) in studies connected with defence acquisition. He was motivated to research the field of capital acquisition in defence following a tenure as Director Budget Cell with the Vice Chief of Army Staff, the Top Level Budget Holder for capital acquisition in the Army. He is also the Chief Editor of the CLAWS Web Focus the popular forum for regular commentaries and articles on land warfare and security-related issues that appear on the CLAWS website. He occasionally contributes articles on various security-related contemporary issues.