Books like Northern Crusades, the Baltic and the Catholic Frontier, 1100-1525 — picked by fans

This is a provocative book. Its very title suggests how difficult it is to understand Polish history than other that a divine joke. Yet his scholarship is excellent and his insights enlightening.

This is especially true for the first volume, which deals with the emergence of the Polish kingdom from rude barbarism to a political and cultural force so powerful that, after its union with Lithuania, dominated East Central Europe for generations. The total collapse of the kingdom in the 18th century—largely to defects in the constitution that allowed foreign interference in the election of the king—has blinded us to what Poland achieved in those forgotten centuries.

The history of the Baltic Crusade cannot be understood in isolation from the Polish kingdom. This is the era when Poland recovers from the disasters begun by the Mongol invasions of the 1240s and begins its own eastward expansion.

As the title indicates, this is really the story of Casimir III, whose father arranged a Lithuanian marriage that brought peace on the eastern frontiers and later allowed him to expand toward Rus’ (especially Ukraine) when the minor states there collapsed. Casimir succeeded in everything except siring a legitimate male heir, even though that was the one task expected of every monarch in this era. He did leave behind a flourishing state, a powerful church, and a national goal of driving back those Germans (especially the Teutonic Knights) who had made great inroads into areas claimed as the national patrimony.

The Germans and Poles moved into a land inhabited by flourishing native tribes that have previously been understood only through the observations of German and Polish chroniclers.

Pluskowski shows that the native peoples had a sophisticated local economy that was hardly changed by the German conquerors. That is, wherever the Teutonic Order and its associated bishops and abbots brought in German or Dutch colonists, the farming practices reflected those of the immigrants’ homelands; however, the three-field system required farmers to work together, while the original inhabitants preferred to retain individual farms worked on the two-field system. The three-field system produced more food, but the Native Prussians valued their freedom more.

This is a very detailed study, with abundant information on what people ate, how they lived, and how they were buried.

This is a look at the evolving Lithuanian state at a key moment in its efforts to fight off western crusaders, expand to the east against Russians and south against Mongols, and accommodate its society and religious practices to its allies and subject peoples.

This was the era when the modern states of Belarus and Ukraine were forming under Lithuanian rule or protection. The cities of those regions, as well as the princes, were all Orthodox Christians, but they preferred being governed by tolerant pagans who lived among them than being heavily taxed by Muslim nomads who despised them.

In the decades to follow, Lithuanians would be deeply influenced by Polish culture and religious thought, so the conversion to Roman Catholicism in 1387 came as no surprise.

I have always been fascinated by medieval history, but I became interested in this particular era after reading this book and learning about the German Order of Swordbrothers (Schwertbrüderorden). 

What intrigued me was that they were a small Order, not very pious or saintly. They were unorthodox and argued constantly with Bishop Albert, the leader of the Christian mission. They were a rough and ready lot, acting more like brigands than warrior monks. One of the brothers murdered the first master, and they locked up their second master when he tried to exert more control over their behavior. Over time, they were accused of almost every crime.

I loved Christiansen’s book, which opened a new world of discovery. He writes in a witty, easy-to-read style that hooked me from the beginning.

William Urban is an American history professor who specializes in the Baltic Crusades. He is probably the pre-eminent English-speaking historian on this subject and has written many other books–mostly on this theme or the Teutonic Knights. I particularly enjoy his no-nonsense writing style. The book has proven invaluable in my own research as it just concentrates on the Crusade in Livonia and Estonia in the first half of the 13th century–as well as showing the other political events taking place in Germany at the time. 

Urban was a great help to my own book. He kindly read an earlier draft of Sword Brethren and gave me some crucial historical advice. He has also agreed to read the next book in the series early in 2025, and I await his opinion with anticipation.

Not many books set in the Middle Ages manage to incorporate “contemporary” concerns within their narrative such as racism and identity – but I like this book for doing just that!

With the action moving from England to the Holy Land, this book tells the story of two very different boys – one in the service of an English knight who joins a crusading army to recapture Jerusalem from Muslim armies, the other a doctor’s apprentice who works in the camp of the Muslim commander, Saladin.

A long but absorbing read that I enjoyed for its vivid recreation of the era, and for its investigation of how the Crusades are viewed from a non-European perspective.

There are numerous excellent books of every length (one runs more than 900 pages) that survey the crusades across the centuries and in their multiple theaters of operation. And several books are more recent, but this little book of fewer than two hundred pages is a gem. Written in clear prose and incorporating biographies of important individuals, key documents, and a glossary, it is tailor-made for students and general readers, and its price is modest. 

A classic. Originally published in 1956, it was one of the first retorts to the dominant strain of military history that emphasized decisive battle, as seen through the eyes of 19th-century theory. Instead, Smail advances the notion—now widely held—that medieval warfare deemphasized risky battles and instead utilized a range of effective operational approaches (raiding, ravaging, sieging, and skirmishing) in a coherent, positional fashion. Similarly in opposition to older approaches, Smail examines not only western warfare through the activities of crusader and crusader-state armies but also how Muslim forces were organized, sustained, and fought. While his sections on military organization, fortifications, and technology have been greatly updated by newer studies, this remains a standard text for anyone interested in the general subject.

A solid grasp of crusading geography is essential for anyone who wishes to understand these complex holy wars, and this book is unsurpassed in providing such information in a clear and comprehensible manner. Its many maps and charts, each beautifully drawn and accompanied by insightful commentary and, in most cases, relevant illustrations and excerpts from primary sources, make this an indispensable resource that belongs in every crusade historian’s library. If you can find a used copy of this out-of-print treasure, buy it without hesitation. Be careful, there is another so-called atlas of the crusades out there by someone who is not a crusade historian, and it is filled with numerous errors.