I'm a little confused as to the wars you left out of your tag line. I know you're dying to tell me what the others were. I must have missed them since WWII ended 60 yrs ago.
Many of us, in fact millions who were in the so called Cold War against the USSR feel that was WWIII. It ended when Ronald Reagan forced the USSR into bankruptcy and out of existance.
At times the so called Cold War was not all that cold with Korea, the Cuban Crisis, Nam, Desert Storm I and many other rather hot situations.
WWIV began officially on 9/11/2001 and probably began when the Iranians took over our Embassy while Jimmy Carter fiddled, wore his sweater and was afraid of rabbits. Since then there has been a long list of violent attacks against American civilians and military by the Jihadists sponsored and coordinated by Iran.