I'm not sure where to ask this so let me know if this is a bad place.
I'm currently trying to invade a precursor world, but my ground forces don't seem to want to attack anything. They out-tech me, so large losses are expected, but I'm not even targeting them. I have several formations set to Frontline attack, with supporting artillery attached and in support position, and around 400 fighters attached with room for hundreds more. The fighters all have autocannons and a fire control (not sure if that's necessary for auto cannons), in addition I have 200 more fighters set to search and destroy with bombardment pods and missile fire controls. After 5 combat phases, I literally targeted nothing and suffered a LOT of casualties.
Anyone have any ideas as to why this is happening?