Guns and cannon were common by 1372. In the 1300s and 1400s, the king relied on mercenaries hired directly or by contract with his great nobles for foreign wars. The King reimbursed the contractors with the profits of war, such as the ransoms paid by the families of rich prisoners. The fighting men supplemented their pay by plunder. Featherbeds and blooded horses were favorite spoils of war brought back to England from the continent. As new techniques with footmen came into being, the footmen became the core of the army and the knightly abilities of the feudal tenants-in-chief became less valuable.
Many lords got men to fight with them by livery and maintenance employment agreements such as this one of 1374: "Bordeaux, February 15. This indenture, made between our lord King John [of Gaunt, of Castile, etc.] of the one part and Symkyn Molyneux, esquire, of the other part, witnesses that the said Symkyn is retained and will remain with our said lord for peace and for war for the term of his life, as follows: that is to say, the said Symkyn shall be bound to serve our said lord as well in time of peace as of war in whatsoever parts it shall please our said lord, well and fitly arrayed. And he shall be boarded as well in time of peace as of war. And he shall take for his fees by the year, as well in time of peace as of war, ten marks sterling [133s.] from the issues of the Duchy of Lancaster by the hands of the receiver there who now is or shall be in time to come, at the terms of Easter and Michaelmas by even portions yearly for the whole of his life. And, moreover, our lord has granted to him by the year in time of war five marks sterling [67s.] by the hands of the treasurer of war for the time being. And his year of war shall begin the day when he shall move from his inn towards our said lord by letters which shall be sent to him thereof, and thenceforward he shall take wages coming and returning by reasonable daily [payments] and he shall have fitting freightage for him, his men, horses, and other harness within reason, and in respect of his war horses taken and lost in the service of our said lord, and also in respect to prisoners and other profits of war taken or gained by him or any of his men, the said our lord will do to him as to other squires of his rank."
Forecastles and stern castles on ships were lower and broader. Underneath them were cabins. The English ship was still single masted with a single square sail. A fleet was formed with over 200 ships selected by the English admirals acting for the king at the ports. Men were seized and pressed into service and criminals were pardoned from crimes to become sailors in the fleet, which was led by the King's ship. They used the superior longbow against the French sailor's crossbow. In 1372, the Tower of London had four mounted fortress cannon and the port of Dover had six.
The war's disruption of shipping caused trade to decline. But the
better policing of the narrow seas made piracy almost disappear.
English merchants may carry their merchandise in foreign ships if there
are no English ships available.
Anyone may ship or carry grain out of the nation, except to enemies, after paying duties. But the council may restrain this passage when necessary for the good of the nation. Any merchant, privy or stranger, who was robbed of goods on the sea or lost his ship by tempest or other misfortune on the sea banks, his goods coming to shore could not be declared Wreck, but were to be delivered to the merchant after he proves ownership in court by his marks on the goods or by good and lawful merchants.
All stakes and obstacles set up in rivers impeding the passage of boats
shall be removed.
Waterpower was replacing foot power in driving the mills where cloth
was cleaned and fulled.
A boundary dispute between two barons resulted in the first true survey map. Nine cow pastures were divided by a boundary marked by a shield on a pole which the commission of true and sworn men had set up.
King Richard II, an irresponsible sovereign, asserted an absolute supremacy of the king over Parliament and declared certain statutes which he claimed to have been forced on him to be revoked. He interfered with county elections of knights to Parliament by directing sheriffs to return certain named persons. He wanted to dispense altogether with Parliament and instead have a committee of representatives. He claimed that the goods of his subjects were his own and illegally taxed the counties. There were many disputes as to who should be his ministers. High treason was extended to include making a riot and rumor, compassing or purposing to depose the King, revoking one's homage or liege to the King, or attempting to repeal a statute. When Henry Bolingbroke reported to Parliament that another lord had cast doubt on the king's trustworthiness, a duel between them was arranged. But Richard, probably fearing the gain of power of the lord who won, instead exiled the two lords. He took possession of the Lancaster estates to which Bolingbroke was heir and forbade this inheritance. This made all propertied men anxious and they united behind Bolingbroke in taking up arms against Richard. Richard was not a warrior king and offered to resign the crown. The "Merciless Parliament" of 1388 swept out Richard's friends. Parliament deposed and imprisoned Richard. It revoked the extensions to the definition of high treason. It elected Bolingbroke, who claimed to be a descendant of Henry III, to be King Henry IV. This action established clearly that royal decrees were subordinate to parliamentary statutes, that Parliament was the ultimate legal arbiter of the realm, and that the consent of Parliament was necessary in determining kingship. The House of Commons became very powerful. It was responsible for the major part of legislation. It's members began to assert the privilege of free speech. That is, they wanted to discuss other matters than what was on the king's agenda and they opposed punishment for what they said unless it was treasonable. Henry IV agreed to their request not to consider reports of proceedings unless they came to him through official channels.