Surviving the Evacuation, Book 16: Unwanted Visitors, Unwelcome Guests - Surviving The Evacuation, #16

The battle might be lost, but the war isn't over. Once it was home to half a billion people. A year after the nuclear war, Europe is a radioactive, storm-ravaged wasteland through which a hundred million undead inexorably march. In their wake, they leave nothing but ruins. Ahead of them flee those few who managed to survive this long. Chasing them are the dregs of humanity. Once known as the Rosewood Cartel, they kill, loot, and destroy as indiscriminately as the living dead.
Hope might be lost, but it could still be found, as can a future for the last remnant of humanity. Those who built a sanctuary on Anglesey, in Dundalk, in Creil are the help that came to others. In this, their darkest hour, but with a new dawn so close, they will not give up. Set in the Faroe Islands, France, Denmark, and elsewhere, the battle has begun, but the war hasn't yet been lost.