370 AD: Russia sues for peace with no catches. I've cleared them off my continent, so I accept.
Having been doing minimum research for a while, I've got 400+ gold in my coffer, and nothing to spend it on, so I turn up research to maximum on Monotheism.
In between turns--the Germans declare war on me!

They send exactly one archer and one swordsman to attack Corinth--and kill the elite Hoplite defending the city! My Hoplite managed to drop the German archer, but now it's vet swordsman against vet swordsmen next turn.
380 AD: I attack that swordsman with a horseman in the hope of doing some damage so he won't be able to take Corinth. No luck. Horseman is red-lined and retreats into Corinth, without scoring a single hit.
Germany's turn. The RNG has screwed me over a couple times already, and I get screwed over again--that German swordsman attacks Corinth again, killing the defending swordsman without taking a scratch! Now the city is only defended by a red-lined horseman. Most of my troops were caught out of position by this sneak attack--I'd figured an elite Hoppie and a vet sword would have been plenty.
It gets better. A German medieval infantry unit is spotted heading for Corinth. Guess Germany, for being a tiny civ, wasn't as far behind as I thought. In fact, technology-wise, he seems to be a front-runner.
390 AD: I manage to get a Hoplite from down south into Corinth. He can't fortify this turn, but it's better than nothing.
I get a break and kill the German swordsman with a horseman. That leaves the German MI to deal with. I have an unfortified Hoplite with no movement left, a 2-health horseman who already attacked this turn, and a red-lined horseman who still has all his movement points. I could try attacking with the red-lined horse, but I elect to let the Hoplite do the defending next turn. Meantime, I start bringing up more troops.
Germany again. The MI attacks Corinth and kills my defending Hoplite. The MI is red-lined, but promotes, bringing him up to 2 health. No sweat, he's still gonna die.
400 AD: Cleopatra drops by for a visit. I trade Iron to her in exchange for Furs.
The German MI dies, and my swordsman promotes to elite in killing him. Good work, trooper. An elite Hoplite from down south fortifies in Corinth. I now have 2 vet horsemen in Corinth, one 2 health and one full. The full-health horseman counterattacks Leipzig, killing a defending Spearman.
England tires of war with me (even though, as with so many other wars this game, our troops never so much as scratched each other), and we make peace.
410 AD: Pharsalos completes my first galley. Time to open up the map some.
My swordsman army reaches Corinth, in preparation for some retaliatory action.
Turns out my army was too slow. My other horseman (the first one is in the infirmary after last turn's battle) heads up to Leipzig--and destroys the city--AND promotes to elite. Dear RNG: screw you! :
The Arabs have Monarchy. I ask them what they want for it, and they tell me it ain't gonna happen. I'm five techs up on them, and they're not interested. I put up all five techs in my trade window, and the result is "insulted".
None of the other civs is in the Middle Ages yet (I couldn't check with Rome or England for a while due to unscheduled wars)