An ex-Marine, Frank Castle was a decorated war hero in Vietnam. While having a picnic with his wife and children, they found they inadvertantly stumbled upon a gang war. His family was killed. And on that day, Frank Castle died as well. In his place stood...
After Jon Hernandez departed from The Punisher, I took it over for three issues to tie up some loose ends. For that reason, it starts off on #5. You can read The Punisher #1-4 at Marvel 2000.