- Delhi: Beyond the Millennium: A Biography (2010) - A comprehensive and detailed history of the city of Delhi from its early origins to the present day.
- The Great Escape: The Untold Story of the Indian POWs of World War II (2012) - A gripping account of the experiences of Indian soldiers who were captured by the Japanese during World War II and their subsequent escape from POW camps.
- The Partition and Its Aftermath: The Human Toll (2013) - A moving and thought-provoking examination of the human cost of the partition of India in 1947.
- The Indian Army Through the Ages: From Mahabharata to Kargil (2014) - A comprehensive and detailed history of the Indian military from ancient times to the present day.
- The Last Salute: The Story of the British Army in India (2016) - A detailed and informative history of the British Army in India from the 18th century to the present day.
- India's Defence Policy: From Strength to Strength (2018) - A detailed analysis of India's defence policy and its implications for the country's security.
Mehta's books are known for their rigor, insight, and readability, and have been praised by scholars and readers alike.