Former Chief Minister Cabbarus, forced into exile in "Westmark" plots with the uncle of the King of neighbouring Regia to invade Westmark and re-establish a "proper" society. Theo wanders the country, trying to get a grip on how he feels about the thought of Mickle, the street urchin he fell in love with in "Westmark" becoming Queen... with himself intended as Prince Consort.
When the invasion begins, Mickle finds herself forced to become a military commander, and Theo finds himself among Florian's "children" again, fighting the Regians as an irregular, eventually rising to the rank of colonel among Florian's forces.
And Alexamder takes the chance -- without seeming preachy or heavy-handed -- to present us with just a bit (PG13 rating or so) of the horror of war and what it does to even good people.
Because "Colonel Kestrel", the brilliant and ruthless revolutionary/guerrilla leader is, also, the gentle Theo, who has never believed in violence as a solution to anything.
Someone has said, more or less, that Alexander is here presenting a parable on the uses and effects of violence, in causes good and not-so-good. He proposes (by example) the question "When -- if ever -- is violence justified in a 'good cause'?", and proceeds to show us (again by example) the answers to that question arrived at by various people of greater or lesser good-will.
And then he hands the reader an even hotter potato to examine than that -- he asks us to consider the after-effects of violence (even "in a good cause") on the people who have found themselves forced into it.
And it hurts -- in a good way -- to see what some people must give up so that others may still have it.
(David Drake presents a much more violent -- and most *definitely* adult -- look at much the same questions in his military SF novel "Redliners".)
In the end, everyone is forced to compromise somewhat, and all *appears* to be well.
On the other hand, this *is* the second olume of a trilogy.
For those familiar with Lloyd Alexander's award winning series, "The Prydain Chronicles", I can honestly and truly recommend this other series written by the 'grand master of fantasy'. A bit more serious with dark overtones, "The Westmark Trilogy" deals with realistic events that can almost convince you that the series is based on true historical events. Through the series you will be given a chance to explore the characters as they struggle with forces beyond their control. Lloyd Alexander gives a realistically accurate study of human nature and psychology of war. I must say, after reading this book, I was left in thoughtful silence, musing over what I had just finished reading. It is not very often we Young Adults are given books which leaves you in a state of contemplation
As I said, I can highly recommend the thrilling and psychologically filling "Westmark Trilogy". Best to read in order. But the faint-hearted be warned, this book and the next one in the series are somewhat violent and gritty since the main theme is about war. But nothing too bad to turn away lovers of a good series! Pick these series up!