The Last Bastion Series by Rhiannon Frater

Machie Ibeke is on the verge of becoming a pilot of her own Hawk in the West African Union Military when the final flight before her promotion is interrupted by a horrifying terrorist attack. The surviving aircrew is grounded and ordered to maintain their silence about the possible emergence of an old enemy so ruthless its sole purpose is to wipe out humanity. In the past, the fanatical Gaia Cult has used the potent Inferi Plague Virus as a terrorist weapon... moreMachie Ibeke is on the verge of becoming a pilot of her own Hawk in the West African Union Military when the final flight before her promotion is interrupted by a horrifying terrorist attack. The surviving aircrew is grounded and ordered to maintain their silence about the possible emergence of an old enemy so ruthless its sole purpose is to wipe out humanity. In the past, the fanatical Gaia Cult has used the potent Inferi Plague Virus as a terrorist weapon. The zombie virus kills, brings the dead back to life, and instills in the resurrected Scourge the overwhelming need to bite and spread the contagion.Living with the knowledge that the world is in danger is difficult, made more complicated by the arrival of visiting family, a rogue A.I. hiding in her apartment building, and questionable activity in the Bamako Megacity.If Machie's suspicions are correct and the dangerous Gaia Cult has returned, then an apocalyptic outbreak is imminent, and it will be up to her to save her loved ones and find a safe haven in a dead world. less

As long as the undead hordes of the Inferi Scourge howl outside the dying city, the last remaining humans struggle to survive inside The Bastion. Vanguard Maria Martinez has lived her entire life within the towering walls. Her only refuge from the overcrowded streets, rolling blackouts, and food shortages is in the arms of Officer Dwayne Reichardt... moreAs long as the undead hordes of the Inferi Scourge howl outside the dying city, the last remaining humans struggle to survive inside The Bastion. Vanguard Maria Martinez has lived her entire life within the towering walls. Her only refuge from the overcrowded streets, rolling blackouts, and food shortages is in the arms of Officer Dwayne Reichardt. Then Maria is summoned to meet with a mysterious representative from the Science Warfare Division and is offered the opportunity to finally destroy the Inferi Scourge and reclaim the land and resources in the valley beyond the wall. If she succeeds, the city may be saved. But if she fails, humanity faces extinction… less

Humanity teeters on the brink of extinction...Vanguard Lindsay Rooney has faced the undead hordes of Inferi Scourge and lived to tell the tale, but she has also suffered horrible losses. Like millions of other civilians, she had hoped that The Bastion would recover after a team of modified soldiers eradicated the undead hordes of Inferi Scourge that infested their valley. Yet the city still crumbles around them, along with any chance of survival... moreHumanity teeters on the brink of extinction...Vanguard Lindsay Rooney has faced the undead hordes of Inferi Scourge and lived to tell the tale, but she has also suffered horrible losses. Like millions of other civilians, she had hoped that The Bastion would recover after a team of modified soldiers eradicated the undead hordes of Inferi Scourge that infested their valley. Yet the city still crumbles around them, along with any chance of survival.Lindsey’s growing friendship with Torran MacDonald, an officer with the Science Warfare division, is her only solace as the decline of the city continues. When food riots fill the streets, martial law is enacted, and the upper echelons of government battle for control of the city, Lindsey is conscripted by her superiors to embark on a dangerous mission into the dead world beyond The Bastion. To add even more complications, Torran and the SWD join the squad. Soon, Lindsey realizes that her mission is more than what it seems, and there are secrets that could both destroy The Bastion and take her life. less