I was playing A2 and I and my AI squad had become engaged with enemies. I must have ordered my squad to a certain spot. Previously, they were all prone and the last formation command was "line".
I turn to see their progress and I see a whole line of my AI mates prone and squirming on the ground on the way to their new location. I was struck by how stupid it looked. It then occurred to me that not only would a soldier not do that, it would actually put them at greater risk. They were totally in the open and exposed for a time that would have allowed me to answer a Final Jeopardy question. IRL, when a soldier moves to one location to another prone-to-prone, he would get up and sprint to the new location and then go prone again. Staying prone with no cover and taking five minutes to get to your new location by squirming there puts a soldier at too much risk.
Sure, there are times when you would stay prone to maintain cover as you moved but this was not one of those times.
My suggestion would be to have a prone soldier, when ordered to a new location, to get up and sprint to a new location and then dive prone once again. Not only would that look far less dumb, I think it would be far better soldiering.
And another annoyance is when there is no threat whatsoever, if you order a soldier to a location and he happens to be prone, he will crawl to the new location - even if he's perfectly capable of walking. I shouldn't have to constantly order my troops to stand up when its obvious they should do so. How many times have you ordered your troops into the chopper and then wait and wait until you realize that your AI is crawling to the chopper - for no reason.