Ghost in the snow. A Halo Reach/Murder Drones crossover

Noble Six finds himself stranded on an unknown planet

The Sentinels: The War for the Centaura Star Cluster

The Quazon Pact invades the natural nations of the Centaura star cluster and ATO forces rush to stop them. Book 7 of the Sentinels series

The Sentinels: An Absolute Monster (Book Six of The Sentinels Series)

The absolute solver is causing problems for ATO can Sentinel 1 destroy it and it's host Cyn before it is to late

The Sentinels: The Special Region Campaign (Book Five of the Sentinels series)

A mysterious Gate opens in the cities of New Alexandria, on Reach and Castle City on Zeta Luna ATO forces are sent through the Gates and they discover a whole new world waiting to be explored Note: this takes place during the events of the GATE anime (2016) or 2602-2603 in universe calendar

The Sentinels: Stranded Amongst the Frost (Book Four of the Sentinels series)

Sargeant Franklin Daiz awakes alone in the ruins of Listening Outpost 21 and he must find a way to get off of Copper 9 or die there

The Sentinels: The Battle for Zeta Luna (Book Three of the Sentinels series)

The Quazon Pact launches an invasion on Zeta Luna, the home world of the New Republic of Hyrule, leading to a fierce and desperate battle.

The Sentinels: The Hunt for the Phantom Legion (Book 2 of the Sentinels Series)

In the chaos of the ongoing Great Galactic War, the Phantom Legion Mercenary group has gotten their hands on Project Ravager and is wreaking havoc in ATO territory

The Sentinels: Massacre at Listening Outpost-21 (Book 1 of the Sentinels Series)

A small remote ATO (Allied Treaty Organization) Listening outpost manned by UNSC personnel on the abandoned Exo-planet Copper 9 is attacked leaving only one survivor