General Singh took over as the General Officer Commanding-in-Chief Western Command on 1 February 2004, and his tenure at this elite command provided an opportunity to put into practice the concepts and doctrines evolved at ARTRAC. He refined operational planning by co-opting the battle-winning role of Revolution in Military Affairs (RMA) and provided focused direction based on the recently released "Doctrine for the Indian Army", having earlier been its architect. He simultaneously gave training a visionary direction in conjunction with principles of synergetic cohesiveness at all levels. His tenure at Western Command also saw a quantum leap in the implementation of the Ex-servicemen Contributory Health Scheme (ECHS). He was also appointed as Honorary aide-de-camp (ADC) to the President of India on 1 February 2004.