Counter Attack — Scott Washburn

The third book in the Martian Front series, humanity figths for its existance

As the Martian force tries to consolidate their position in the U.S., President Theodore Roosevelt gathers the best scientific minds and industry leaders to meet the Martian challenges.  Staking everything on a roll of the dice, a joint army-navy force are in the midst of developing a landship to win the war.  The big question is if they can complete it in time.