Autocracy DOES get something way better: Lightning Warfare. All Armor units (Tanks, Panzers, Modern Armors) forever after will have a Foreign Legion's worth of combat bonus no matter where they are, ignore ZOC, move faster than before, and as a bonus, your Generals even move faster. Those 6 free Foreign Legions you got can never be replaced and aren't that useful unless fighting outside your borders. Autocracy can build Armors at will, and Armor units are VASTLY superior to Infantry. Armors can hit-and-run against cities, surround and pound slower units, and thanks to Autocracy spamming Exp buildings for happiness, and having an exp tenet that also increases production, all their armors can start with a +33% combat bonus against Wounded units.
Nothing Freedom has even comes close. Freedom's armies can never match an Autocrat's, because Freedom simply cannot have a Brandenburg Gate in every city. Volunteer Army's only lasting bonus is not having to pay upkeep on 6 units, but Autocracy can pay 33% less upkeep on ALL their units, so they can field a much larger army.
Lightning Warfare is pretty good, yes.
But 6 Foreign Legions at once, though they will never be replaced, is huge:
- If you are behind in military techs (as you'd be when bee-lining Refrigeration, which you can do just to get the first ideology) you get 6
technologically advanced units compared to what you'd normally have.
- If you are right on pace with techs, it's 6 units to add to whatever GWBombers and GWFighters you have, or whatever Artillery you have. These 6 units can become your very-effective meat shield when moving onto an attack.
-If you are ahead in military techs, you can upgrade them instantly into standard Infantry, in which case the Foreign Lands bonus is huge.
-And if you have a low-production empire, these 6 units may save you from needing to hard-build an army quickly to stave off the enemy. Often, simply by taking Volunteer Army, my army size jumps at least one or two places, which is enough to keep a perpetual war-monger (Attila, Genghis Khan) from picking me as the wounded wildebeest to finish off.
Moreover, Arsenal of Democracy is a great war-monger tenet in Freedom. Especially when coupled with Statue of Liberty, which is only available to Freedom now. Having those two things lets you build not just armor, but
any unit that much faster.
And as far as armored warfare goes, Order can get the Kremlin if armored units are really the key unit one wants to use, so Autocracy doesn't have a monopoly there, either.