Unknown Enemy — Nick S. Thomas

Your country is under attack. You don't know what they are, or where they came from. What do you do?
When an army platoon goes missing on exercise near the small town of Wood Point, Master Sergeant Jack Ross is called in to investigate. But when all communications out of the valley is lost, the townsfolk and soldiers in the area are left to fend for themselves.

But when Ross stumbles upon the bodies of fallen soldiers, he realises they are about to face the greatest battle of their lifetimes. Under attack from soldiers that cannot be human, the towns folk are rapidly killed or captured with ruthless efficiency. Ross must rally together everyone he can to resist the terrifying enemy. The fate of the country hangs by a thread as they desperately battle to survive the onslaught.

Unknown Enemy is the first Broken Earth novel, an action-packed adventure set during an invasion by a technologically advanced and unknown enemy. It was previously known as Earth Storm: Invasion.