Operation A: Umbra

Operation A: Umbra is the first operation of Halo: Spartan Assault.

Missions

 * Assault on CF-32
 * The Mirror Mantle Counter-Assault
 * Reinforcement of the Perch
 * Live to Fight
 * The Last Stand

Transcript
{Introduction}

''Greeting, Spartan. I'm Roland, 's AI.''

We're going to study the historical battles in hopes of increasing your tactical skills for the future.

As a bonus, it's a pretty fun game you can play in your spare time.

So let's get to it.

{Cutscene}

''Loading up records for the Battle of Dreatheus-V. The fighting started when a splinter sect of Covenant ignored the Ceasefire of 2552 and attacked UNSC forces. By the time the fighting was done..''

Well, it didn't end well for the UNSC or the Covenant, either one.

''Spartans Davis and Palmer were both stationed on Draetheus-V's moon at the time of the first attack. Let's see how they succeed in the repelling the first assault waves.''