I don't insist that you believe Dorsai! is the best novel of military SF ever written: one could make a pretty good case for Heinlein's Starship Troopers. I will, however, insist that those two novels (first published within weeks of one another in 1959) are in combination the standard against which the subgenre of military SF must be judged.

Everybody who's attempted a complex task knows that there are more ways to go wrong than there are to do the job right. Dorsai! and Starship Troopers are a useful illustration of the diversity nonetheless possible between first-class works, even within a category as narrow as military SF. Heinlein's novel focused on the individual soldier and the social forces that molded him. Dorsai! is an investigation of the problems of high command and the qualities that produce the ideal commander.

The differences in approach aren't so much apples and oranges but rather the drive and driven plates of a clutch: both command and execution are necessary for a military system to work. In my opinion, Dickson and Heinlein have explored these segments of the system not only as well as anybody in the field has done, but as well as anybody is likely ever to do.

Dorsai! is an exposition of what Basil Liddell-Hart termed the Strategy of Indirection. (I do not imply a necessarily direct connection.) Instead of overwhelming one's opponent by brute force, the exponent of indirection maneuvers so that his opponent has to attack or (better yet) is checkmated without a battle.

Liddell-Hart developed his theories as a reaction to the blood-drenched killing grounds of World War One, a conflict that was as perfect an example of the brute force approach and its limitations as one could find. The brute force technique as refined to its quintessential form by Field Marshal Haig involved silencing hostile machine guns by attacking with more infantry than the machine gunners had bullets. (I wish I were exaggerating, but read the accounts.)

Liddell-Hart went further back in history and examined the campaigns of Hannibal, Sherman, and particularly the Byzantine general Belisarius to find an alternative strategy. To defeat an entrenched enemy, maneuver around him and force him to leave his fortifications in order to protect his rear areas. Instead of attacking an enemy, destroy his supplies so that he has to retreat. Move into a position that the enemy must take (ideally for reasons of perceived honor rather than pragmatic need) and let him waste his strength against your fortifications -- until you move out and leave him with a useless shell.

These are the sorts of campaigns that Donal Graeme, the hero of Dorsai!, fights. Anyone who has had the fortune to be involved in the other sort of war will wish that more real-life officers had considered the responsibilities of command as clearly as Dickson did.

Dorsai! is and was conceived as a self-standing novel. Because of the strength of its conception, however, it has become the foundation of one of science fiction's most ambitious and far-ranging constructs, the Childe Cycle. The Cycle is a vast structure, spanning a millennium from the historical fourteenth century to a fictional future in which the triune aspects of humanity will be united again in a form both superhuman and super-humane.

Much of the Cycle remained to be written when Dickson died more than forty years after the original publication of Dorsai!, though further pieces of the interlocking whole continued to appear throughout his lifetime, each excellent in its own right. It is a tribute to the structure of the original novel that the conception shown here in microcosm remain valid despite the weight of detail accreting in the later novels.

I've discussed Dorsai! as paradigm: for fiction writers in general, for military professionals, and for Dickson himself in his later work. None of the above could have touched me when I first read the novel at age fifteen. (Well, I read The Genetic General; which is not quite the same thing, but almost.)

What struck me and caused me to reread the novel a number of times was that this is one heck of a good story. It's a model of clean prose, seamless structure, and fast action. In this too, Dorsai! is a paradigm -- for other writers. But that doesn't have to matter to readers, whether first-timers or (like me the other day) for the umpteenth time.

Dive in and have fun!