General Singh assumed command of the elite 1 "Strike" Corps at Mathura. He successfully coordinated the corps-level exercise "Poorna Vijay" in May 2001 in the deserts of Rajasthan. He subsequently led I Corps during Operation Parakram, the military standoff against Pakistan, from December 2001 to December 2002. He was then appointed GOC-in-C of the Army Training Command (ARTRAC) in January 2003, where he was credited with drafting a new doctrine for the Indian Army. He was instrumental in giving the Command a distinctly discernible and widely appreciated thrust towards modernisation. After his stint at ARTRAC, he stated, "Every assignment has its own importance, but the one at ARTRAC, the think-tank of the Army, has been quite different as it plays a crucial role in preparing the Army for future challenges in a constantly changing battlefield milieu. The responsibility involved development of new concepts and doctrines at the strategic and operational levels for the emerging security environment, besides framing of the training policy and providing training support to the Army in all its facets." He was awarded the Param Vishisht Seva Medal (PVSM) on 26 January 2004 for his distinguished services of the highest order.