Most fighting occurred in France, particularly Normandy, Aquitaine, the Loire valley, and northern regions. Important sites included Crécy, Poitiers, Agincourt, Orléans, and Castillon, while Paris and Bordeaux were major political and strategic centers. The English Channel connected English armies with their bases, and naval operations affected reinforcements and commerce. Rivers, castles, walled towns, and productive agricultural districts shaped both major campaigns and destructive raids.