I'd assume it was mostly striders and dropship-like alien creatures.I know that afterwards came the transhumans arm. But what did combine ground forces look like during the invasion?
The human division, so your normal soldiers wouldn't exist at the current timeframe, humans were only transhumanized after the seven hour war.
I know that afterwards came the transhumans arm.
An accurate representation is given in the game "Hunt down the freeman", where the protagonist finds himself mixed up in the 7 hour war itself