As a school for a man of action there could have been no better post than the governorship of Calais. The place had been beset by the French ever since the loss of Normandy in 1450, and was never out of danger of a sudden attack. Three times in the last six years considerable armies had marched against it, and had only been turned away by unexpected events in other quarters. Bickering with the French garrisons of Boulogne and other neighbouring places never ended, even in times of nominal truce. To cope with the enemy the Captain of Calais had a garrison always insufficient in numbers, and generally in a state of suppressed mutiny; for one of the chief symptoms of the evil rule of Suffolk and Somerset had been the impotence of the central government to find money for the regular war-expenses of the realm. The garrison of Calais was perpetually in arrears of pay, and successive governors are found complaining again and again that they were obliged to empty their own pockets to keep the soldiers to their post. Even the town-walls had been allowed to fall into disrepair for want of money to mend them.
Besides his military duties the Captain of Calais had other difficult functions. He lay on the frontier of Flanders, and a great part of the trade between England and the dominions of the house of Burgundy passed through his town, for Calais was the "staple" for that branch of commerce. Hence he had to keep on good terms with the neighbouring Burgundian governors, and also--what was far more difficult--to endeavour to sweep the Straits of Dover clear of pirates and of French privateers, whenever there was not an English fleet at sea. This was no sinecure, for of late English fleets had been rarely seen, and when they did appear had gone home without effecting anything useful. The man who could with a light heart undertake to assume the post of Captain of Calais must have been both able and self-confident.
Warwick held the place from August 1455 to August 1460, and combined with it the post of "Captain to guard the Sea" from October 1457 to September 1459. His tenure of office was in every way successful. The garrison was brought up to its full strength, and put in good discipline--largely, we may suspect, at the expense of the Earl's own pocket, for after October 1456, when the Duke of York ceased to be Protector, Warwick got little money or encouragement from England. He raised the strength of his troops to about two thousand men, and was then able to assume the offensive against the neighbouring French garrisons. His greatest success was when, in the spring of the third year of his office, he led a body of eight hundred combatants on a daring raid as far as Étaples, forty miles down the coast of Picardy, and took the town together with a fleet of wine-ships from the south of France, which he put up to ransom, and so raised a sum large enough to pay his men for some months. Falling into a disagreement also with the Burgundian governors in Flanders, he made such havoc in the direction of Gravelines and St. Omer that Duke Philip was obliged to strengthen his garrisons there, and finally was glad to consent to a pacification. The negotiations were held in Calais and came to a successful conclusion, for a commercial treaty was concluded with Flanders as well as a mere suspension of arms.