Has anyone ever seen AI use troops and capture a planet

[Jubala]

I've been trying to get the AI to use troops by making troops a starting tech and telling to build tons of them and the ships to fly them around in. It builds tons of troops and loads them into troop transports, but after that it's like it doesn't know what to. The troop transports just wander around aimlessly looking lost. I have never seen an AI invade me or another AI.