There is no definitive answer to this question as it is impossible to know for sure who has the highest war ever. However, there are a few contenders for the title.
One possibility is Genghis Khan, the founder of the Mongol Empire. He was a master strategist and led his armies to victory in many battles. The Mongols were also known for their brutality, often massacring entire populations of conquered cities. Under Khan’s rule, the Mongol Empire became one of the largest empires in history, stretching from China to Europe.
Another contender is Alexander the Great, who ruled over a vast empire that included most of Asia and Egypt. He was an incredibly successful military commander and conquered many lands during his reign. Like Genghis Khan, he was also known for being brutal towards conquered peoples.
It is also possible that there are other individuals who have had higher wars than these two men but we do not know about them due to lack of historical records. In any case, both Genghis Khan and Alexander the Great were great military leaders and conquerors whose legacy continues to this day.