Pretty typical Baen military space opera from Forstchen. Set around 2100, the solar system was consumed by a civil war of Earth versus the outer colonies until finally a peace was reached, with the outer colonies 'granted' their independence. Four years after the war, an alien flotilla invades the solar system and while destroyed, inflict heavy loses on Earth. Was this just a foray?
The story revolves around Justin Bell, a war hero who fought for Earth in the civil war. There is a lot of backstory (this is the third book of a series) leading up to where this novel takes off, but basically, the Academy was established prior to the war under the guidelines of the USMC to teach the cadets honor above all else. During the war, the cadets, who came from all over the solar system, were forced to pick sides along the lines of the American civil war. Lots of tragedy ensued. One of the defining moments of the war was a nuke strike on a Martian city that killed tens of thousands of civilians; ostensibly it was a legit military target, but for Justin Bell, it was murder and he resigned from the military thereafter. Then came the aliens!
This is a very rah rah novel along right wing lines to be sure. America is often alluded to, not the country (as it is subsumed under the UN) but the ideal of freedom and liberty, coupled with that great frontier spirit. Earth's politicians are lead by basically a socialist along the lines of the cold war and while the Academy is formerly under their control, the USMC does not like it one bit. It seems all of Earth's politicians just want to dominate the former colonies and even the alien threat does nothing to 'unify the race' against them. Thankfully, the colonies managed to salvage one of the alien ships and reverse engineer it to a degree; they do not know how it works, but they can fly it, and it goes FTL! It seems Earth is simply a very small player in a much larger galactic war! Can our hero Justin save the day?
This reminded me of golden age space adventure mixed in with a homage to the US military. Nothing really surprising here and it made for a decent read if you are into that kind of thing. I like military space opera, but this one did not really do much for me. Trite themes (the honorable military being used by rapacious politicians; the 'pioneer spirit' of America; aliens basically just like us and engaged in their own political machinations, etc.) feature heavily in this and Forstchen does not really go beyond a stereotype of the genre. 2 lackluster stars.