Although Gascony was the cause of the war, Edward III was able to spare few resources for its defence, and previously when an English army had campaigned on the continent it had operated in northern France. In most campaigning seasons the Gascons had to rely on their own resources and had been hard-pressed by the French. In 1339 the French besieged Bordeaux, the capital of Gascony, even breaking into the city with a strong force before they were repulsed. Typically the Gascons could field 3,000–6,000 men, the large majority infantry, although up to two-thirds of them would be tied down in garrisons. In July 1346, Edward III landed the main English army in Normandy in northern France. Philip concentrated French forces against this threat and over the following year the Anglo-Gascons were able to push the focus of the fighting away from the heart of Gascony.