1337 – King Edward III claimed the throne of France although, the French nobles gave the title to Philip of Valois – starting the Valois dynasty. England and France had commercial and dynastic rivalries and were vying for commercial area, known as Flanders. It was an ongoing dispute and they went to war in 1340.
France had more men, but England dominated the seas, and had the skilled longbow men, gaining the advantage over the French.
1346 – The English defeated the French at Crecy. They lost 15,000 men, and England only 200, this was a major victory for England.