Hundred Years' War English-occupied Calais. In a campaign reminiscent of Crécy, he found himself outmanoeuvred and low on supplies and had to fight a much larger French army at the Battle of Agincourt, north of the Somme. Despite the problems and having a smaller force, his victory was near-total; the French defeat was catastrophic, costing the lives of many of the Armagnac leaders. About 40% of the French nobility was killed. Henry was apparently concerned that the large number of prisoners taken were a security risk (there were more French prisoners than there were soldiers in the entire English army) and he ordered
Battle on the Nemiga River the deep snow on the Niamiha River on March 3 and defeated him. The precise course of battle is unknown, though it has become legendary as a bloodbath; "The Tale of Igor's Campaign" referred to "the bloody banks of the Nemiga" being sown not with blessings but with bones. Vseslav fled back and Polotsk and the Yaroslav princes did not pursue him. However, in June, after the battle, the Yaroslav princes called for negotiations, “kissed the cross” (took an oath) and made promises of future safety; Vseslav was invited to Iziaslav's camp to celebrate the peace and was promptly arrested