A lot has happened since my last update. Things didn't shake out like i wanted them to diplomatically, but i think it all turned out fine. My initial plan was to build more elephants, upgrade them, and take out Hammy. The AI had other ideas. First SB declared on me out of the blue and attacked my elephant stack with like 1 Knight. The rest of his stack never showed up. Shortly after SB declared, the Jewish bloc with the AP sent out a
second resolution to declare war on Roosevelt. I had already defied the first resolution and my cities were suffering from the unhappiness. I couldn't afford to defy a 2nd one, so i just voted No. The resolution passed anyway, and suddenly everyone was at war with America.
I wasn't really finished upgrading troops, but i quickly got my Cuirs rounded up to defend on the initial few turns since Roosevelt was behind me and those cities were mostly garrisoned by warriors. Eventually i went on the offensive, letting the other AI due the dirty work and mopping up on a couple occasions. I took 4 cities including Washington and NY, and he capped giving me Economics in the deal. SB also took peace for 110g in the middle of the Roosevelt war.
I got a pretty good look at everyone's stack during the war. Hammy didn't have anything too impressive and lost a good bit of it, but Sury had this:
I declared on Hammy without wasting too much time, and got Pacal into the fray as well for the small price of Divine Right (plus he gave me some gold back!). I felt fairly confident that Sury wouldn't get involved unless there was an AP vote b/c there was nothing that Hammy could bribe him with. I bypassed the nearest Babylonian city b/c it was pretty heavily defended and took one a little further in while Pacal bombarded the first one. I let him suicide his stack and was left with this to easily mop up.
Hammy was pretty much done after that and capitulated a couple of cities later. He wouldn't give me any tech, but i got some gold out of him, and then made this trade.
I noticed Sury still didn't have Replaceable Parts or Military Science, so i declared on him right after my stack healed. That stack of 20+ Knights and Ballista Elephants in the pic up above showed up a few turns later outside of a Babylonian city, but it was all Cuirs at this point. I hit it with the 3 cannons that had made it to the front lines, and then threw all of my Cuirs at it wiping it out with almost no losses.
I healed, picked off Angkor Wat which was really lightly defended, and then marched on towards his capitol where i was met by this.
He must have bee-lined Rifling when i declared on him. Good thing i had cannons!
I didn't have enough units to fully take him out, and on the next turn he had 10 or so units in there again including 4-5 fresh Rifles. Fortunately i had some full-strength guys left that were able to mop things up pretty easily. I moved on taking two more cities and finally got my damn marble back (now that it's useless

). Things weren't all sunshine and roses though b/c literally every seafood resource i had got smashed by Frigates, and i lost my Fish+Furs city to the south to a boat attack. Washington captured it a couple of turns later and actually agreed to give it back to me though. heh
On the last turn of the war, Sury got Infantry. I'm really glad that didn't happen earlier.
He capitulated after that and gave me Steam Power, but i didn't get a screenshot of it. I also traded him Steel and Military Science for Biology bringing things to where they stand now.
I'm not entirely sure where to go from here. Sury has Infantry and Hammy has Artillery. I think both of them could have both techs soon, so gifting back some cities and letting them do the dirty work is an option. I could also keep the cities since there's a lot of good stuff in Sury's cities and tech/trade to Infantry and maybe Artillery myself.
This is the tech situation and a list of my relevant units: