First Campaign in France Because of his rank, John of Gaunt was one of England's principal military commanders in the 1370s and 1380s, though his enterprises were never rewarded with the kind of dazzling success that had made his elder brother Edward the Black Prince such a charismatic war leader. On the resumption of war with France in 1369, John was sent to
Calais with
Humphrey de Bohun, Earl of Hereford, and a small English army with which he raided into northern France. On 23 August, he was confronted by a much larger French army under
Philip the Bold, Duke of Burgundy. Exercising his first command, John dared not attack such a superior force and the two armies faced each other across a marsh for several weeks until the English were reinforced by the
Thomas de Beauchamp, Earl of Warwick, at which the French withdrew without offering battle. John and Warwick then decided to strike
Harfleur, the base of the French fleet on the
Seine. Further reinforced by German mercenaries, they marched on Harfleur, but were delayed by French guerilla operations while the town prepared for a siege. John invested the town for four days in October, but he was losing so many men to
dysentery and
bubonic plague that he decided to abandon the siege and return to Calais. During this retreat, the army had to fight its way across the
Somme at the ford of Blanchetaque against a French army led by Hugh de Châtillon, who was captured and sold to Edward III. By the middle of November, the survivors of the sickly army returned to Calais, where the Earl of Warwick died of the plague. Though it seemed an inglorious conclusion to the campaign, John had forced the French king,
Charles V, to abandon his plans to invade England that autumn. In the summer of 1370, John was sent with a small army to
Aquitaine to reinforce his ailing elder brother, the Black Prince, and his younger brother
Edmund of Langley, Duke of York, Earl of Cambridge. With them, he participated in the
Siege of Limoges (September 1370). He took charge of the siege operations and at one point engaged in hand-to-hand fighting in the undermining tunnels. After this event, the Black Prince gave John the
lieutenancy of Aquitaine and sailed for England, leaving John in charge. Though he attempted to defend the duchy against French encroachment for nearly a year, lack of resources and money meant he could do little but husband what small territory the English still controlled, and he resigned the command in September 1371 and returned to England. Just before leaving Aquitaine, he married the
Infanta Constance of Castile in September 1371 at
Roquefort, near
Bordeaux,
Guyenne. The following year he took part with his father, Edward III, in an abortive attempt to invade France with a large army, which was frustrated by three months of unfavourable winds. Probably John's most notable feat of arms occurred in August–December 1373, when he attempted to relieve Aquitaine by the landward route, leading an army of some 9,000 mounted men from Calais on a
great chevauchée from northeastern to southwestern France on a 900-kilometre raid. This four-month ride through enemy territory, evading French armies on the way, was a bold stroke that impressed contemporaries but achieved virtually nothing. Beset on all sides by French ambushes and plagued by disease and starvation, John of Gaunt and his raiders battled their way through Champagne, east of Paris, into Burgundy, across the
Massif Central, and finally down into
Dordogne. Unable to attack any strongly fortified forts and cities, the raiders plundered the countryside, which weakened the French infrastructure, but the military value of the damage was only temporary. Marching in winter across the
Limousin plateau, with stragglers being picked off by the French, huge numbers of the army, and even larger numbers of horses, died of cold, disease or starvation. The army reached English-occupied
Bordeaux on 24 December 1373, severely weakened in numbers with the loss of at least one-third of their force in action and another third to disease. Upon arrival in Bordeaux, many more succumbed to the
bubonic plague that was raging in the city. Sick, demoralised and mutinous, the army was in no shape to defend Aquitaine, and soldiers began to desert. John had no funds with which to pay them, and despite his entreaties, none were sent from England, so in April 1374, he abandoned the enterprise and sailed for home.
Head of government On his return from France in 1374, John took a more decisive and persistent role in the direction of English foreign policy. From then until 1377, he was effectively the head of the English government owing to the illness of his father and elder brother, who were unable to exercise authority. His vast estates made him the richest man in England, and his great wealth, ostentatious display of it, autocratic manner and attitudes, enormous London mansion (the
Savoy Palace on the Strand) and association with the failed peace process at Bruges combined to make him the most visible target of social resentments. However, John's ascendancy to political power coincided with widespread resentment of his influence. At a time when English forces encountered setbacks in the
Hundred Years' War against France, with John's efforts not viewed as being as successful as his father and brother, and Edward III's rule was becoming unpopular owing to high taxation and his affair with his mistress
Alice Perrers, political opinion closely associated the Duke of Lancaster with the failing government of the 1370s. The
Good Parliament was called in 1376 due to shortages of government funds. It turned into a parliamentary revolution, expressing grievances at high taxation, misgovernment and corruption at court. With the Black Prince supporting reform John was isolated and the Commons managed to get the great officers of state dismissed and Alice Perrers was barred from the court. This changed with the Black Prince's death on 8 June 1376 and the onset of Edward III's last illness at the closing of the Good Parliament on 10 July left John with all the reins of power. John immediately had the ailing king grant
royal pardons to all the officials impeached by the Parliament; Alice Perrers too was reinstated at the heart of the king's household. John impeached
William of Wykeham and other leaders of the reform movement, and secured their conviction on old or trumped-up charges. The
Bad Parliament of 1377 was John's counter-coup: crucially, the Lords no longer supported the Commons and John was able to have most of the acts of 1376 annulled. He also succeeded in forcing the Commons to agree to the imposition of the first
poll tax in English history—a viciously regressive measure that bore hardest on the poorest members of society. Gaunt protected the religious dissenter
John Wycliffe, so staking out a more anti-clerical position than his contemporaries at least partly in order to threaten the clergy into paying higher taxes. Wycliffe believed that church wealth was damaging to the church, which coincided with Gaunt's views that church wealth could fund the government's military needs.
Richard II's early reign John's influence strengthened with Edward III's death in 1377 and the accession of Edward's ten-year-old son
Richard II. There was organised opposition to his measures and
rioting in London in 1377; John of Gaunt's arms were reversed or defaced wherever they were displayed, and protestors pasted up lampoons on his supposedly dubious birth. At one point he was forced to take refuge across the Thames, while his Savoy Palace only just escaped looting. It was rumoured (and believed by many people in England and France) that he intended to seize the throne for himself and supplant the rightful heir, his nephew Richard, the son of the Black Prince, but there seems to have been no truth in this and on the death of Edward III and the accession of the child Richard II, John sought no position of regency for himself and withdrew to his estates. John's personal unpopularity persisted, however, and the failure of his expedition to Saint-Malo in 1378 did nothing for his reputation. Ultimately, some of his possessions were taken from him by the Crown. In 1380, his ship, the
Dieulagarde, was seized and bundled with other royal ships to be sold to pay off the debts of Sir
Robert de Crull, who during the latter part of King
Edward III's reign had been the ''Clerk of the King's Ships'', and had advanced monies to pay for the king's ships. During the
Peasants' Revolt of 1381, John of Gaunt was far from the centre of events, on the
March of Scotland, but he was among those named by the rebels as a traitor to be beheaded as soon as he could be found. The Savoy Palace was systematically destroyed by the mob and burned to the ground. Nominally friendly lords and even his own fortresses closed their gates to him, and John was forced to flee into Scotland with a handful of retainers and throw himself on the charity of King
Robert II of Scotland until the crisis was over.
Second campaign in France John's final campaign in France took place in 1378. He planned a 'great expedition' of mounted men in a large armada of ships to land at
Brest and take control of Brittany. Not enough ships could be found to transport the horses, and the expedition was tasked with the more limited objective of capturing
St. Malo. The English destroyed the shipping in St. Malo harbour and began to assault the town by land on 14 August, but John was soon hampered by the size of his army, which was unable to forage because French armies under
Olivier de Clisson and
Bertrand du Guesclin occupied the surrounding countryside, harrying the edges of his force. In September, the siege was simply abandoned and the army returned ingloriously to England. John of Gaunt received most of the blame for the debâcle. Partly as a result of these failures, and those of other English commanders at this period, John was one of the first important figures in England to conclude that the war with France was unwinnable because of France's greater resources of wealth and manpower. He began to advocate peace negotiations; indeed, as early as 1373, during his great raid through France, he made contact with , brother and political adviser of
Pope Gregory XI, to let the pope know he would be interested in a diplomatic conference under papal auspices. This approach led indirectly to the Anglo-French Congress of Bruges in 1374–77, which resulted in the short-lived
Truce of Bruges between the two sides. John was himself a delegate to the various conferences that eventually resulted in the
Truce of Leulinghem in 1389. The fact that he became identified with the attempts to make peace added to his unpopularity at a period when the majority of Englishmen believed victory would be in their grasp if only the French could be defeated decisively as they had been in the 1350s. Another motive was John's conviction that it was only by making peace with France would it be possible to release sufficient manpower to enforce his claim to the
throne of Castile.
Peasant's Revolt As
de facto ruler during Richard's minority, he made unwise decisions on taxation that led to the
Peasants' Revolt in 1381, when the rebels destroyed his home in London, the
Savoy Palace. Some of the rebels suspected John of wanting to seize the throne himself, with rebels swearing "that they would accept no king called John", although he took pains to ensure that he never became associated with the opposition to Richard's kingship. Unlike some of Richard's unpopular advisors, John was away from London at the time of the uprising and thus avoided the direct wrath of the rebels.
Rehabilitation In 1386 John left England to seek
the throne of Castile, claimed in
jure uxoris by right of his second wife,
Constance of Castile, whom he had married in 1371. However, crisis ensued almost immediately in his absence, and in 1387 King Richard's misrule brought England to the brink of civil war. John had to
give up on his ambitions in Spain and hurry back to England in 1389. Only John's intervention in the political crisis succeeded in persuading the
Lords Appellant and King Richard to compromise to usher in a period of relative stability. During the 1390s, John's reputation of devotion to the well-being of the kingdom was largely restored. ==King of Castile==