From Halopedia, the Halo wiki
On December 12, 2559, Private First Class Miyazaki was onboard UNSC Infinity when it was ambushed by Banished forces upon arrival at Installation 07. As the Infinity fell to the Banished assault, Miyazaki and her squad mate Private Chamberlain was under the command of Spartan Theodore Sorel in repelling Banished boarders. Upon hearing Captain Thomas Lasky to evacuate, Sorel led the Miyazaki and other marines to the hangar bay for evacuation.
Along with Sorel, Miyzaki made landfall on the surface of Installation 07, but their aircraft Oscar 128 was downed in Banished-occupied territory. Having lost uplink to UNSC command and spotted by Banished troops, Sorel and the marines were forced to hold their position. On the next day, Sorel and his marines witnessed an explosion causing the ring to fracture. Two weeks later, on December 28, Sorel went on a recon sweep and observed the ring being repairing itself, and returned to Miyazaki, noting that as per Rubicon Protocol, they were to continue sabotaging Banished operation on the ring.
List of appearances