There are 3 books in The Martian Wars Trilogy series.
The Martian Wars Trilogy series does not have a new book coming out soon. The latest book, Armageddon Off Vesta (Book 3), was published in October 1989.
The first book in The Martian Wars Trilogy series, Rebellion 2456, was published in May 1989.
The Martian Wars Trilogy series primarily falls into the Space Opera genre.