There are 2 books in The Cohort Chronicles series.
The Cohort Chronicles series does not have a new book coming out soon. The latest book, The Third Emissary (Book 2), was published in September 2022.
The first book in The Cohort Chronicles series, The Quiet Centurion, was published in November 2020.
The Cohort Chronicles series primarily falls into the Action Adventure genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.