The 26th century. Humanity has expanded beyond Earth’s system to hundreds of planets that colonists now call home. But the United Earth Government and the United Nations Space Command is struggling to control this vast empire. After exhausting all strategies to keep seething colonial insurrections from exploding into a full-blown interplanetary civil war, the UNSC has one last hope.

Spartans. Humanity’s first—and last—line of defense in a hostile 26th-century galaxy. You have been selected to join their ranks. The Official Spartan Field Manual is a guide to every element of the United Nations Space Command (UNSC) SPARTAN-IV program, disseminated to all newly augmented Spartans. Inside this book is the guidance you’ll need to put your enhanced strength, speed, and skills to use in both War Games training simulations and, ultimately, joint combat operations.

An original novel set in the Halo universe by USA TODAY bestselling author Kelly Gay.

As kids, the three of them were inseparable; as soldiers, they would be torn apart. Marcus Fenix and Dominic Santiago fought alongside Dom’s elder brother Carlos at Aspho Fields in the epic battle that changed the course of the Pendulum Wars. There’s a new war to fight now, a war for mankind’s very survival. But while the last human stronghold on Sera braces itself for another onslaught from the Locust Horde, ghosts come back to haunt Marcus and Dom.

They slept for hundreds of years, dreaming of a new home in the Andromeda galaxy. When finally they awake, their dreams of peace are shattered. These colonists - turian, salarian, asari, human, and more - face an uncharted galaxy and threats beyond understanding.