The EB paradigm is that the "copy legionaires" were actually homegrown assault infantry types which the Romans, in due egocentric form, duly took to be copies of their so very excellent pattern (nevermind now that *they* had originally copied it from someone too...) right ? Certainly the only ones known for certain to be "copies" are the Numidian ones, which were originally trained by allied Roman officers, and those are a tad off the EB timeframe aren't they...?