The devastation caused by the World Wars I & II is remembered even today. These wars shattered the lives of thousands of people and posed a serious threat to mankind as such. The brutalities and atrocities committed on humanity is highly condemnable. Use of lethal weapons, the fierce atom bomb attacks lead to destabilisation of millions of people. This book gives an account of the sequence of events which lead to the happenings of these wars. A special feature of this book is the analysis and impact of different strategies and tactics, from the perspective of a common reader, to understand why different battles were fought in a particular manner. It gives the message that no such war should be fought in the future because that would be fatal for the humanity.