I cannot say about the other wars. Reenactment's popularity grew after the 125th reenactment anniversary of the original Manassas battle. Over 6000 reenactors attended.
there are reenactments of all of the wars, the Civil War being most popular because it was fought on US soil, and it was US against US, the biggest popularity came between the 80's and 90's
I hope you are doing well. I was wondering the other day that if we should still do American Civil War reenactment Hobbyists recreate the battle or events of the Civil War. Yes, but they do not represent current lives and it is difficult to relate. Well, other countries also have reenactors of the American Civil War. Countries such as Canada, Germany, and even Poland to name a few. The problem I see is that it is mainly on the field battle that we see, but the real war happened behind closed doors (politicians) and we put to much focus on the reenactment of battles. You know reenactments of the Cicil War actually began before the real battle had even ended I did not know that, but still why ? From what you are telling me, it seems more for amusement (theater) than history. What about other wars that the US was part of. Even the American Revolution  does not see as much reenactment.
Reenacting grew in popularity during the 1980s and 1990s, due in large part to the success of the 125th Anniversary reenactment near the original Manassas battlefield, which was attended by more than 6,000 reenactors.