I opened up the game and did a pretty careful survey of the Celtic lands. I had my "pillage people" (to be code-named Y, M, C, and A) all picked out and ready to go sit on iron. But, the thing is, Brennus has no iron. The nearest iron visible on our world map is on a hill due north of our lake that Japan will almost assuredly occupy. So until he can trade, Brennus is ironless!!!!
Also in that survey, I noted no less than 5 different luxuries west of our lands. Now, we already have two of them (furs, gems) but the other three (spices, silks, ivory) would go a long ways towards solving our inevitable happiness problems. I like the "Hold our ground including horses in the north and push west when we can" plan more and more.
The first few turns were straight-forward defensive posturing, MMing, worker activities. In 490, I finally had my first combat, a sword of ours killing a Celtic archer. To celebrate that occasion, I had a revolt. We drew 5.5 turns of anarchy, slightly worse than average but not too bad. The Japs saw our indecision and started settling closer to us via the jungle.
Our city count grew by 3 in 470. Halicarnassus (a future trouble spot) and Pergamon (on the lake) were founded, plus Agendincum was captured from the Celts. Agen is not in a good place but is worth 2 gpt in unit upkeep costs while we hold it. Abandoning it when we will lose it seems wise to me.
Next interesting year was 430, when Greek swords killed an Ottoman horse, 2 Celtic archers on the attack and defended successfully against a Japanese archer.
410 saw the founding of Miletos in the tundra to the south and the first enemy boat unload (an impi by some unprotected workers).
390 heralded the first (of many) Greek casualty, as our vet horse failed to kill the offending impi. Our workers flee the area. This so distresses the people that they end their anarchistic ways and appoint Arathorn King!!! The Iroquois and Japanese also start the GLib.
Lots of cities were evaluated in the following year, re-establishing their productive ways. BUT they will need to be checked again soon. We kill a Jap archer and pop our goodie hut in the south, finding it was empty all along.
Our GA started in 350 AD, as I had to use a hoplite to kill an offending warrior in our backlines. It's starting to get dicey all over. We really need the extra units ASAP. Cities are re-examined for optimal production considering shields-in-box. As units complete, each city will need to be re-examined for what works best.
With that, Arathorn retires -- it's good to be the king, but it's tiring, too. The next two leaders get GA production to absorb the brunt of units being sent by our foes. That time will be critical.
I spent a fair bit of time moving workers who were improving far-out cities back towards our core cities, which are working unimproved squares. With our dense build, a LOT of squares in the core are constantly being worked and so we need a lot of squares fully improved.
I saw a fair number of ships sailing south along our east coast. We'll need a few units back in defense of our south, playing a zone defense. Fortifying a few units on mountains to not give them easy landing points would probably be wise.
I also think the time has come to start pulling back a lot of our "forward" defense/offense. Visibility is limited and the AI will start sending horses/impi soon. We'll want them close to home so we can use 'pults to lower our potential casualties.
Save file at
http://www.civfanatics.net/uploads4/CB1-AW-350bc.zip
Arathorn
pillage people 
