Dead Down Under — Eric S. Brown

In the wake of the demonic invasion of Earth and the zombie apocalypse, the battle of good vs. evil rages on. A group of heavily armed British Troops, led by a dark and mysterious man, arrives on the doorstep of humanity's last holdout of civilization in Australia. Are they the allies against the dead they claim to be, or do the British have their own plans for the fate of the Outback in this Lovecraftian inspired take on the zombie apocalypse.