This may be spilling the beans, but since I live in Patton country up near Hamilton, MA, I can no longer restrain myself. Mosby was a family acquaintance of the Pattons. Supposedly, he told George many Civil War tales and they played games in which Patton was Lee and Mosby was himself.

This does not however ensure that Patton would have made Mosby his "small warrior of choice." The "singular battle" part of the original question
best for small wars tactics as well as singular battles
leaves us a lot more wiggle room.