Elite Forces is +25% damage. This means that a unit at 99 health inflicts 124% of normal damage. It means that at 80% health, a unit inflicts full damage. This is incredibly useful, regardless of whether you're playing as Japan. Although, as Japan, I imagine it means you inflict 125% damage when damaged... I haven't tried.
Here is how I open Autocracy typically when *not* doing militaristic CV:
In an ideal world, this is my order.
1) Mobilization+Industrial Espionage
2) Total War
3) Elite Forces
4) Nationalism
5) Clausewitz's Legacy
6) Fortified Borders
7) Police State
8) Gunboat Diplomacy
Realistically, you will *never* get all of these, unless you're playing as Poland or on low difficulty level. (where you can take 400 turns to win and strategy doesn't matter)
This would be the order I would take for militaristic CV as well, *assuming I took Autocracy*, because *efficient domination is the key* to CV on high difficulty levels. (IE Emperor-Deity, where you're competing for wonders, and the AI is making great works and archaeologists)
On lower difficulty levels, it hardly matters what strategy you use, and military conquest is much easier, so I might go straight into policies that directly assist CV.
A more realistic list of policies (on Emperor-Deity) is this:
1) Fortified Borders (You didn't get Autocracy first, so only one SP)
2) Mobilization (you desperately need to save money)
3) Militarism (because you've captured 2 capitals + 2 puppets by now, at least)
4) Clausewitz's Legacy
5) Universal Healthcare (because your ideology is getting trounced)
4) Police State (because your ideology is still getting trounced and you have capitals you desperately need to annex)
3) Third Alternative or Nationalism (because you ran out of oil or money...)
8) Gunboat Diplomacy
I know, you're thinking Universal Healthcare?? I typically have 5 NW by the time I open Ideology. (Oxford, NC, Ironworks, Circus Maximus, Palace) Sometimes I even have East India. +5 happiness es muy bueno.
But, despite the fact this thread is about autocracy CV, I think it's worth mentioning that Autocracy is not necessarily the best Ideology for militaristic CV.
This is because, (on difficulty levels where the game is actually a challenge) happiness + science is everything. Autocracy has the happiness, but not the science. Tech theft helps yes, but not as much as half-cost factories that give +25% science. Order is just a really bad-ass Ideology.
Socialist Realism is the best happiness policy. Academy of the Sciences is a nice touch. Skyscrapers and Workers' Faculties are perhaps the best policies in any tree. Spaceflight Pioneers is awesome for CV. Why? Free GS + Free GE = CV wonder and the tech you need to build it. Young Pioneers is also great. Happiness from your production and science buildings is WIN.
Why happiness + science? Because on any reasonably high difficulty, you likely will need Airports, Hotels and even the Internet to win a CV. Completely eliminating EVERY city of every Cultural runaway is exceedingly taxing on Happiness, and time-consuming to boot. Better to capture their best culture cities and stall their cultural output.
So, after all that conquest, you're still waiting around for victory until you overwhelm their culture. So science really does matter. And that brings me back to Rationalism. You need to be dipping into Rationalism to win a CV. Which is why it's ABSOLUTELY fair to compare Rationalism policies to Futurism. There's no way (unless you're Poland) that you aren't having to choose between Rationalism and Futurism.
That 250 tourism every 10-15 turns is a drop in the bucket compared to what you'll need to win, and completely *pointless* compared to the happiness + science you need.
Anyway, IF you're going to go Autocracy (which definitely helps loads with the conquest part) then you can at least take advantage of Police State. (Which helps a lot if you're going for total elimination of a civ)
I think a lot of people examine social policies in a vacuum, instead of the situation you'll actually be in. I did this exact same thing a while back, defending Futurism. And then I tried to fit it into my SP order in REAL GAMES. And it just doesn't fit. EVER.
But, to each their own. Ultimately, the problem with comparing all these things is that on low difficulty, strategy doesn't matter unless you're going for record times. Therefore the only strategy worth discussing is for Emperor+, and most people don't play on that difficulty... soooo it's all somewhat moot.