Many have compared this book, often unfavorably, to Starship Troopers. Some going as far as to call it a rip off of Starship Troopers. I take a different perspective...
In an interview Steakley has actually said that he was inspired by Starship Troopers when he wrote Armor, and took many ideas for his book from Heinlein's. Not in an effort to steal, but as a compliment - Borrowing a scenario he loved and using it to explore a different idea.
Starship Troopers is an exploration of citizenship, duty, and patriotism in human terms.
Armor is an exploration of war and will - The human drive, and the resiliency of the human animal under the most extreme of circumstances. This exploration is primarily through the experiences of Felix, and the reactions of his observers, Jack Crow and company.
Felix is a soldier. A very good soldier. Too good. He cannot, will not, be defeated. Every battle, every fight, every amount of seemingly insurmountable difficulty he encounters, he champions. Suffering, being injured, but never being destroyed, and continually throwing himself and being thrown back into the fray. Against an endless, unstoppable, enemy, a race of giant sentient ants, who never stops coming. For all his victories, Felix' reality remains the same: The Antwar. A conflict, unexplained even to its fighters, on a desolate hellhole world: The planet Banshee, a barren desert, with subzero temperatures and screaming winds.
Felix' experience is shown through the recording devices inside his powered combat armor, which has come to be in the possession of a group of scientists, and Armor's secondary protagonist Jack Crow. As Crow and others become more and more sucked into Felix' world of despair and terror, made only more terrifying by his unstoppable will to never quit, their own problems only grow. Their own quiet place in space is becoming unstable, local forces and an enemy of Jack Crow's past coming together for a final conflict that forces them out of Felix' memories, and into a war of their own.
This book succeeds not for the writing - Which is either brilliant literary eccentricity, or just not that well crafted depending on your perspective - or even for the plot. It succeeds and a story of the human will. The machine, the monster, that lies within every man, and how he can choose to champion it, or let it destroy him. And of what a man of character and will is capable of doing with that monster - That "Engine".
This is one of the few books I visit over and over again. I have favorite parts and passages, which provide comfort, strength and reinforcement in times of need.
I also cannot keep a copy of this book on my shelves, as I am constantly giving them to people who need to read it.