A total war is a war that involves all aspects of life, so for example the governments would :
-continue sending their men to war, as in other kinds of wars -control the economy, by for example setting controls on prices, on what is produced and on the prizes of rentals.
This was known as the "iron curtain." It was a term used to describe the boundary in Europe, which formed at the end of WWII and lasted until the ending of the Cold War.