User blog comment:CommanderOz/Alien invasion scenario/@comment-36064825-20180813124106/@comment-27160012-20180817014314

These aliens have already wiped out around 95% of the human race by orbital bombardment alone, and their fighters took over the assault roles and hunted down human survivors from the air, which further reduced the human population to 10 million or less worldwide. These aliens also explicitly attacked military bases, so expect very little artillery, naval, ECM or air support left for mankind to use.

The alien military number a few million beings, but their strength is greatly augmented by autonomous robots who do most of their work, although still relying on alien commanders for directions.

In addition, alien settlers are intentionally landing in large numbers at areas where human resistance is likely fierce (USA for example), so that localized alien militias will drive out the humans. Over time, more alien settlers from somewhere in space will arrive and outnumber the humans by far.

The aliens still think that Africa is largely a wilderness to be colonized later.