(0) 280AD
The food box in Neapolis is full and this city needs an aquaduct yesterday. I spend 176 gold to rush it. Cumae, at 12 food/turn and optimized for shields, can wait. It will get it's aquaduct in two turns anyway, and can move immediately onto a harbor. I'm happy to see the irrigation crews back at Antium. Looks like we snagged a few slaves between my turns.
I'd prefer to have our army healing on a mountain. So I move it onto a convenient Dutch gems mountain.
Switch a couple of Rome's citizens from mined non-bonus grassland to forests to bring us up to 20 shields/turn. For a size 12 city, that doesn't really seem a lot. It will still grow in five turns, so after the Heroic Epic completes I can pop out a Medieval Infantry, then a Worker.
IBT
An American stack of seven swordsmen come into view in Dutch territory.
America starts Sun Tzu's.
Veii - Medieval Infantry -> Medieval Infantry
Neapolis - Aquaduct -> Marketplace
(1) 290AD
Bombard a veteran Dutch spearman three times, scoring two hits. I want to keep my troops healthy for the incoming swordsman stack, so I'm going to let this one go.
IBT
Rome - Heroic Epic -> Medieval Infantry
Antium - Catapult -> Catapult
Cumae - Aquaduct -> Harbor
(2) 300AD
A lone archer and the Legionary army take out a Dutch spearman/archer/settler trio that was attempting to refound West of Amsterdam with no losses. That seven swordsman stack is next to our army, but with the army at 11/14 I don't think it'll get attacked.
I attack the veteran Dutch spear from last turn, and redline it with one catapult shot. It is killed by our elite archer.
IBT
The American swordsman group splits into two groups of three and four. Our army successfully takes pot-shots at two of them.
In a moment of classic AI stupidity, the Dutch move a settler next to our army, and cover it with an archer

Dutch start Sun Tzu's.
(3) 310AD
It goes without saying that the Dutch archer/settler pair is killed off by our army, giving us another two slaves. Now if only I can get them back to our core.
IBT
The two pot-shotted American swordsmen are left behind, and the other five regroup next to our troops on the chokepoint.
The Dutch land two archers near Veii.
The Americans land a warrior and a spearman near veii.
Rome - Medieval Infantry -> Worker
(4) 320AD
We have a number of troops scattered around Veii, so I deal with this threat first.
Elite legionary defeats regular Dutch archer.
Elite legionary defeats regular American spearman.
Veteran archer loses to a regular American warrior

Now I wake our catapults at the Southern front, and hit three of the advancing swordsman. A fourth one is taken out by a Medieval Infantry. That leaves only one full-strength regular left, and he will be attacking veteran legionaries on hills.
IBT
And then the goddamn &^%$&^ regular swordsman attacks and WINS against a fortified veteran legionary on a hill

A second 2/3 swordsman then takes out the elite archer there. Damn the ##$@Q$R% RNG. Damn it to hell

The American warrior decides to ignore Veii and goes for our redlined legionary instead. Our legionary wins.
Dutch start Sun Tzu's again.
Rome - Worker -> Medieval Infantry
Veii - Medieval Infantry -> Medieval Infantry
(5) 330AD
Looks like the catapult training is working, as we score hits on four American swordsmen, redlining two.
IBT
Dutch bring out another archer/spearman/settler pair.
Cumae - Harbor -> Temple
(6) 340AD
Another spear and archer destroyed, another two slaves. Still cannot get them back to our core though.
Medieval infantry kills a 2/3 swordsman on the chokepoint hill.
IBT
We lose our Medieval Infantry on the chokepoint, but not before he takes out two more American swordsmen.
The Dutch request an audience, and are told where to go.
Antium - Catapult -> Catapult
(7) 350BC
All swordsmen within range are redlined by our catapults. One more is taken out by a medieval infantry. This time I bring troops out of Antium to cover.
Rush marketplace in Neapolis.
Rush temple in Cumae.
IBT
Now it is the turn of the Japanese to smoke some

- as they land an archer/settler pair next to our army.
Rome - Medieval Infantry -> Medieval Infantry
Cumae - Temple -> Marketplace
Neapolis - Marketplace -> Harbor
(8) 360AD
Well I'm happy to say that the American swordsmen are no more, as the last three are redlined with catapults and killed up by our troops with no losses on our side.
Our army takes out the Japanese archer and nets us another two slaves. The six Dutch slaves can finally be moved towards our core.
Kill a wandering Dutch archer on our side of the chokepoint.
Switch Antium from Catapult to Marketplace and Rush it.
IBT
Looks like the Dutch have managed to find a few troops. All spearmen and archers though.
The Dutch also start Sun Tzu's for the third time.
Veii - Medieval Infantry -> Medieval Infantry
Antium - Marketplace -> Aquaduct
(9) 370AD
Our new slave workforce has been busy building a road across the chokepoint and into Dutch territory. It is finally complete.
IBT
No attacks. In fact the Dutch turn round and flee.
(10) 380AD
We have enough troops at the chokepoint now to keep a look-out for settlers moving or landing West of Amsterdam, so I place the army on pillaging duty to strip the foreigners bare.
Kill the American swordsman next to Veii. Dutch aren't a problem right now.
Decide to play on two more turns to round out the years.
IBT
The Dutch archer moves toward Rome and threatens our worker.
You guessed it. Dutch start Sun Tzu's for the FOURTH time.
Rome - Medieval Infantry -> Medieval Infantry
(11) 390AD
I move a Legionary out of Rome to cover our threatened worker. And move a second legionary next to Rome int Rome so that it doesn't riot.
Amsterdam gets some pillagin' lovin'.
Because of the large crop of slave workers, I merge one of our workers into Antium to bring it to size 5.
Hurry marketplace at Cumae.
IBT
Cumae - Marketplace -> Medieval Infantry
Neapolis - Harbor -> Medieval Infantry
(12) 400AD
Merge a second worker into Antium to bring it to size 6.
More pillaging around Amsterdam. It has dropped from size 8 to size 7.
Kill a veteran Dutch spear that was looking for a pillage.
Summary: Things are a lot quieter at the chokepoint now. I started the army on a pillaging rampage, and this should continue into America once the Dutch are back in the Stone Age. Keep a watch on the two ruined cities to the West of Amsterdam and South of our chokepoint. The AI has been periodically sending settlers there, and I have picked up 8 slaves this turn thanks to this. There should be enough troops on the checkpoint now to take full advantage.
I took the opportunity to use the large treasury I was left with to rush infrastructure in our cities. There are marketplaces in all cities, and only Antium does not have an Aquaduct. Due to the large amount of excess food at Neapolis, I would recommend mining and roading both of the gems mountains.
Thinks look good right now. Have fun.
...And the save file - BZ8-400AD