A lot of the society activity came to an end simply because technologies coming along. There are some 10,000,000 members of various groups listed n 1907 and that was probably the peak. Cinema, radio, other things coming along to create something else to do after work. WWI, no doubt, another chapter ending many groups. Some still remain and still use swords for ceremony, pomp & circumstance.
Disturbingly, there are actually reproductions popping up and Atlanta Cutlery has at least one offering. It is true that prices are all over the place but there are still a lot of swords coming out of basements and attics. A collection of regalia that includes the person's history can command a premium but far, far more of them are simply overpriced for what they are.
As far as the military swords, certain patterns survived but not so really the militia use of swords (especially the helmet heads). What we get then is the National Guard instead. The Ames catalogs still carried them into the 1880s and were listed as military association swords. Those groups often veterans of the ACW, Indian Wars and the Spanish/American war. There is the Ancient and Honorable Artillery group but those swords a whole 'nother story. Philadelphia Light Horse, again some persisted in a more militaristic vein.
Up until very recently, The Ames Sword Company was still marketing fraternal swords and I believe Pettibone continues the trade but these are all ceremonial swords, no more functional than the current India wave. Functional is a bit of frame of mind as well. All could kill, all are meant for decoration/ceremony. None of the new stuff particularly suited for anything serious but thrusting
I have walked past this group of tables a couple of times and the pile keeps growing
There is currently a heavy guard wide blade example on Ebay (search militia sword) but it is overpriced, albeit a good sound looking example. I tend to be a bottom feeder and look for the bargains being ignored or mislabeled.
Happy Hunting
GC