User blog comment:ADour/CIVIL WAR II: The sides are revealed/@comment-24812000-20160413015624/@comment-16461120-20160413020325

It was for making the 1,659,000th edit on the wiki, just like it says. You're the only person that will ever get that badge; however, another like it will be given out for every 1000th edit, so the next will be 1,660,000.