The book opines that India was a strong and united country, as in the Mauryan, Gupta and Mughal ages, when a strong, centrally controlled kingdom existed. This kingdom was centred around a capital city that symbolised the power and strength of India. These strong kingdoms had capable rulers, an established administrative infrastructure, economic prosperity, and formidable military power. In ancient times the capital cities of these kingdoms were Patliputra and Kanauj, and since the thirteenth century AD it has been Delhi. The book describes the conditions preceding these Battles for Delhi, the battles themselves, and their consequences. Encompassing over six hundred years of Indian history, this book describes thirteen battles from the Battle of Tarain in the late thirteenth century to the Indian War of Independence in 1857, making a strong case for a continuous effort to preserve and strengthen India s unity.