Anglo-Burgundian military cooperation, 1420-1435

Apart for a few episodes such as the battle of Cravant (1423), the defence of Paris (1429) and especially the capture of Joan of Arc at the siege of Compiègne (1430), the military aspect of Anglo-Burgundian alliance in 1420-1435 war is little known to general audience. This stage of the Hundred Years War is presented largely as a series of English successes in the 1420s followed by the defeats and setbacks after 1429. The present study aims to uncover this largely ignored aspect of one of the most dramatic stages of the Hundred Years War, which at a certain point brought the English to the walls of Orléans – an undoubted peak of their centuries-long efforts to subdue the French kingdom.For the aims of research, the course of the Hundred Years War in the 1420s-early 1430s has to be considered not in the terms of the English fighting against the French but as a struggle of two alternative claims to the French throne, both of them relying on certain support among the French population. One of these suggested that the French crown remained with the Valois dynasty represented by Charles VII, the other tried to introduce the Dual Monarchy of England and France under the governance of the House of Lancaster, as formalised by the Treaty of Troyes (21 May 1420). The role of Philip the Good, duke of Burgundy, the most high-ranking French partisan of the Dual monarchy, as the pillar of the Lancastrian power in France becomes the subject of study. This raises the question of the system of obligations between the duke and the Lancastrian government, the modes of its practical exploitation and the significance of the duke’s contribution to the Lancastrian war efforts.With this in mind, this study provides a chronological reconstruction of Anglo-Burgundian military cooperation in its development by placing it in a wider military and diplomatic context. Having assembled the evidence on the practice of military assistance it proceeds to discussing the most widely employed models of cooperation and interaction between the allies eventually leading to a certain reconsideration of the whole nature of the Anglo-Burgundian alliance. What the research reveals is the scale and continuity of the alliance which retained its importance from December 1419 to September 1435, the significance of the allies’ efforts in supporting each other and variety of its models and, finally, the crucial influence of the military power or weakness factor on the diplomacy and politics in France