A couple of preliminary notes:
1. I first read Von Ryan's Express when I was about 12 years old. It inspired me to write my first novel, 2 years later (as a Christmas present for my sister, which was, sadly, historically rather inaccurate).
2. I have gone on record—in an interview in 2008—citing Von Ryan's Express as my favourite book.
I am a little more mature now when it comes to reading, so when asked about my favourite book, I always say that I don't have one favourite. But this one still remains one of my top five books.
A quick summary of the plot: Von Ryan's Express is a good, old-fashioned war adventure story, set in Italy. It begins in a POW camp which houses about a thousand British and American officers. At the start of the book, a new prisoner has just arrived: Colonel Joseph Ryan, an American airforce officer and a very hard taskmaster. Within minutes of arriving, Ryan asserts his seniority (he displaces the British Colonel Fincham as the senior officer at the camp) and sets about licking the entire bunch—the undisciplined, dirty, sloppy prisoners as well as their slipshod Italian guards—into shape.
Within minutes, too, Ryan has made himself extremely unpopular; just a handful of men—the chaplain Costanzo, the doctor Stein, a young lieutenant named Billy Petersen—are able to get along with him. For the others, Ryan is poison—and he doesn't care.
But things take an unexpected turn when Italy capitulates, and suddenly freedom is in sight for the Allied POWs at the camp. Events, however, play out in such a way that the Germans arrive and take over, quickly transferring all the prisoners into a train headed for Germany. A thousand Allied officers is a huge prize, even in wartime Europe, where trains can hardly be spared.
And Ryan—dubbed Von Ryan by his men, because they think he's more fascist than the Germans themselves—realizes that it all depends on him: he has to come up with a plan to get his men—all his men—out.
There are many reasons for my love for this book. Firstly, there's the plot: very exciting, very well-written, with a superb pace and good twists of plot. Secondly, there's the humour, of which there is plenty, especially in the dialogues. Thirdly, there are the characterisations: everyone, from Ryan and his colleagues to the Italians at the POW camp, to the Germans, comes alive very vividly. I like, too, the fact that while this is an adventure story, there are also glimpses of the realities of war: how it affects both soldiers and civilians, how greed and humanity and every other human emotion still exist side by side, how war can ravage a land.
If you at all like adventure stories, do not give this a miss. It is addictive.