Not infrequently, in the unending debates about the nature of koryu, and whether it is "for real," someone mentions that although the ryu may have once been valid training methods that had techniques effective in combat, they have lain in degenerate dormancy for over 400 years, with no reality testing whatsoever, and those who practice are, at best, collectors of antiquities.
This is, however, not really accurate. Without even making the effort to do any research, I can think of many ryu which had members who went to war, survived, and returned to practice, quite content with their chosen ryu, and quite possibly vivifying it with some of their combat experiences. For example, members of the Kashima Shin-ryu participated in various conflicts including the Satsuma rebellion. One member of the Araki-ryu was Jirocho, a Robin-Hood type Yakuza who had many episodes of hand-to-hand combat, another participated in the Seishin-gumi (an outfit like the Shinsengumi) and fought in the internicine wars that ushered in the Meiji period.
It is sure that many warriors from many ryu participated in these battles at the end of the Meiji period.
In addition, quite a few fighters had a lot of taryu-jiai experience, particularly jujutsu ryu. Shihan of the last generation of both Kiraku-ryu and Tatsumi-ryu were described to me as being very strong in shiai. One of the former won a three-way tournament between judoka, Araki-ryu members and Kiraku-ryu members.
Finally, many many of the elderly men of the last generation of koryu - either deceased or still aging gracefully, were fighters in WWII. Those that survived again returned to their ryu. (BTW - one of the major reasons, not often cited, for the decline of koyru is that the generation who were young in the 40's mostly were killed on the battlefield. There was a gap between the elder generation and current - what was missing was the middle. Thus, in many ryu, a few young men - often middle-class, studied from very old men who passed on what they could to the very small group of individuals who remained interested.)
I well agree that combative experience in WWII, for example, was far different from that of the 1600's. But the point I'm trying to make is that there were far more men than is usually imagined who were familiar with the rage, terror and chaos of war - still passing down koryu in modern times. And until this generation, there were also far more who chose to also find some way to compete, be it in taryu jiai, or simply in judo or kendo.
The phenomena of koryu antiseptically apart from anything but insular kata, practiced by individuals without experience in combat or competition, is perhaps a modern one - and is not common to all koryu schools either.
Best
Ellis Amdur
www.ellisamdur.com