Halo: Initiation and Escalation

Led by Commander Palmer, these super-soldiers are unparalleled warriors, but it will take more than raw combat skill and dogged bravery to keep humankind safe from the danger that approaches on all sides. From the rise of Sarah Palmer to the rank of Spartan Commander aboard flagship Infinity to the UNSC's extraordinary efforts to stop the machinations of Jul 'Mdama and the Covenant.