Four years later Hubert de Burgh, Governor of Dover Castle, defeated another attempted raid on England by improvising a fleet and attacking the French squadron in the Straits. De Burgh got to windward of the French, then sailed down on them, grappled and boarded them. There was an incident which happily we do not hear of again in naval warfare. As the English scrambled on board of the French ships they threw quicklime in the eyes of their opponents. It was, no doubt, an ugly trick of piratical fighting, for in those days when there was no police of the seas there was a certain amount of piracy and smuggling carried on by the men of Dover and the Cinque Ports. Just as for lack of police protection highway robbery was a danger of travel by road, so till organized naval power developed there was a good deal of piracy in the European seas, and peaceful traders sailed in large fleets for mutual protection, just as travellers on land took care to have companions for a journey. The Channel was also enlivened by occasional fights for fishing-grounds between fleets of fishing-craft, and the quicklime trick of Hubert de Burgh's battle was probably one of the methods of this irregular warfare. Edward I had a navy which did useful service by coasting northward, as his armies marched into Scotland, and securing for them regular supplies and reinforcements by sea. Under his weak successor the sea was neglected, and it was the third Edward who used the navy effectually to secure that his quarrel with France should be fought out, not on English ground, but on the Continent, and thus became the founder of the sea power of England. There was no Royal Navy in the modern sense of the term. When the King went to war his fleet was recruited from three different sources. The warship was a merchantman, on board of which a number of fighting-men, knights, men-at-arms, archers and billmen were embarked. These were more numerous than the crew of sailors which navigated the ship, for the largest vessels of the time were not of more than two to three hundred tons, and as oars were not used in the rough seas of the Channel and there was only one mast with a single square sail, and perhaps a jib-foresail, the necessary hands for sailing her were few. There was a dual command, the knight or noble who led the fighting-men being no sailor, and having a pilot under him who commanded the sailors and navigated the ship. This dual arrangement (which we have seen at work in the fleets of more ancient days) left its traces in our Navy up to the middle of the nineteenth century, when ships of the Royal Navy still had, besides the captain, a "sailing master" among their officers.