Alyattes crosses the Halys

Not a lot is known about the battle that ended the five year war between Alyattes, King of Lydia and Cyaxares, King of the Medes, except that it took place that at the Halys River and it ended when there was a solar eclipse which science can date to May 28, 585 BC.  I was looking for a quick game that I could fit in around chores this weekend, looking to test the latest version of Gathering of Hosts and I've been looking to move past last year's interrupted  Mede-Lydian campaign. The battle of the Halys seemed like a good choice. Lacking any real information, I borrowed a situation and the relative strengths and proportions of two armies from some other battle involving a river.........

The Medes are defending the river bank with a unit of chariots, 3 units of medium cavalry and 1 of light cavalry. In the rear is a hill being held by 2 units of medium infantry supported by 2 units of skirmishers.

The Lydians are attacking with a unit of heavy cavalry on the right, led by the General in person, 4 units of heavy infantry in the center supported by 2 units of light infantry and 2 of skirmishers, and finally on the left flank, a unit of medium cavalry,.

If all goes well, I'll get to play through it tomorrow.