Napoleon was Emperor of the French, so the adjective that should be used is 'imperial' not 'royal.' The latter indicates the Bourbons, not Napoleon. And he also brought back the term 'regiment' in place of 'demi-brigade' that was in use during the Revolution and early Consulate. 'Colonel' was also reinstated.

And the bottom line is 'so what?' The Revolutionary calender is not an indicator of anything egalitarian, but represents the idea of getting rid of anything, useful or not, from the ancien regime. The new revolutionary governments had a very bad habit of throwing 'the baby out with the bath water.'