This has long been one of my favorites, and I can't imagine why I haven't arranged it for guitar previously. It always reminds me of July Fourth and Flag Day celebrations, perhaps because of the quick, march tempo, as well as the subject matter.
Anyway, it's fun to play, and not very hard. Classification: Easy. I hope you enjoy playing it as much as I've enjoyed arranging it.
I do apologize for not doing more hymns, now that I'm officially retired. "Retired" is a relative term. I'm camping out in a camping trailer while building a cabin for us to live in in the mountains of Utah. Mostly by myself. So even though I'm not working for wages, I'm working harder than ever. See my building blog, "The Gold Street Cabin in Mammoth, Utah" for details, pictures, etc.