Under a Graveyard Sky by John Ringo ~ book 1 of Black Tide Rising trilogy...zombies and a family who not only survives, they organize other survivors in a world that has lost almost everything but each other.
Having encountered the Krag before, Commander Max Robicheaux now faces daunting challenges: the dangers from the enemy without…and clashes with crew and superiors within. Meanwhile, Doctor Sahin receives a message summoning him to a secret meeting that aims to change the balance of power in Known Space. Both men must call upon their developing skills and growing friendship to bear the burden of carrying between the Krag Hegemony and the Earth Union a fateful ultimatum.
#3. For almost three years, Dtimun, the enigmatic and mysterious Cehn-Tahr commander of the Morcai Battalion, has been at war not only with the Rojok Dynasty…but also with his feisty medical chief of staff, Dr. Madeline Ruszel. Now a surprising visitor from the future has charged them with the rescue of the enemy, field marshal Chacon. To ensure success, both Madeline and Dtimun must make personal sacrifices and attempt a dangerous mission behind enemy lines.
Luta Paixon has plenty of trouble on the Tane Ikai, with relationships in flux and the sticky problem of having two captains on one ship. But when an alien artifact, the remnant of a long-ago war, shows up on the other side of a newly-discovered wormhole, she and her crew are pressed into the service of the Nearspace Protectorate. The Tane Ikai's task: covertly deliver an alien historian to the site to decipher its meaning - and possible threat.