Since his unexpected victory at the battle of Agincourt in 1415, Henry V's fortunes had been transformed. From being a monarch in fear of being deposed by those closest to him, within a handful of years he was heir to the French throne. His succession was set out in the treaty of Troyes in 1420, an agreement that also outlined his marriage to Catherine of Valois, daughter of the French king, Charles VI.
With support from Burgundy, Henry continued in his campaign to win further support for Charles in Armagnac territory, which was resolute in
