The Conquest was followed by the imposition of the feudal system, binding the church to perform military service to the crown. This, at first regarded as a hardship, agreed well with the warlike spirit of the times, and although the bishops appointed their feudal advocates to fight their battles, protect their interests, and lead their vassals to the field, yet they sometimes took the field in person, and rode amid the lances of the men-at-arms. The military advocates held their lands of the church, and, in court and field, their service was honourable. Indeed the title of advocates of the church was bestowed upon Pepin and Charlemagne.

Thus the regulations of the feudal period encouraged the military disposition of the prelates, who, when the invaders burst in, readily raised the cry to arms. It will be remembered that when Hotspur and Douglas carried on their great trial at arms on Otterburne field, by the cloud-drifted light of the moon, the Bishop of Durham was marching with 10,000 men to ensure the defeat of the invaders. However, he arrived too late; the battle was over, Douglas slain, and the two Percies prisoners, and the Scots strongly posted to resist attack. A second battle must have been sanguinary, and the result doubtful, therefore the bishop decided not to take upon himself the responsibility of fighting, but withdrew his warriors, leaving the Scots to return unmolested to their own country.

Chief among the amateur soldiers of the church in King Edward the First’s days, was the proud and magnificent Bishop of Durham, Anthony de Beck, Patriarch of Jerusalem, and Lord of the Isle of Man. At Falkirk he drew an unrighteous sword against Wallace and the Scottish patriots. Previous to the battle he celebrated a soldier’s mass on the field, clothed in knightly mail as he was, the long kite-shaped shield slung over his shoulder, the sword girt at his thigh. The ceremony over, he was ready to charge Wallace’s schiltrons and archers, but the first column preceded him, led by the Earl Marshal, and Lincoln, and Hereford. He saw man and horse impaled on the huge Scottish spears, and the charging files rolled back in blood, while the Scottish arrows drifted into their ranks. He appreciated the valour of the enemy, and proposed to await the arrival of the numerous archers, who would speedily, and with little loss to themselves, shoot down the Scottish schiltrons. The men-at-arms were, however, eager to close, and Rudulf Basset scornfully advised the Lord Bishop to stick to his mass, while he led the charge. Thus rebuked, the bishop gave the word, leading, sword-in-hand, and furiously assailed the Scottish left, to be hurled back, again and again. The treacherous retreat of the Scottish cavalry left the schiltrons exposed to certain destruction, and the English archers shot them down without mercy.

When Edward III. lay before Calais, he paid Thomas Hatfield, Bishop of Durham, 6s. 8d. per day, and his following in proportion, viz.:—three bannerets at 4s., 48 knights at 2s., 164 esquires at 12d., 81 archers on horseback at 6d. each per day.

Perhaps the most notable of the fighting bishops was Henry Spencer, of Norwich. When the whole of England lay in panic terror at the mercy of the revolted villeins, when drawbridges were raised, gates closed, and knights and nobles hid themselves behind stone walls, Henry Spencer bade trumpets sound, and sallied forth with his men-at-arms, attacking the marching peasants wherever he met them. Emboldened by his example, a few gentlemen associated themselves with him, and he extended his operations to Cambridge and Huntingdon, which were soon pacified. When John Littester, the dyer, leader of the Norfolk villeins, despatched deputies to the king, the alert bishop intercepted them, and incontinently struck off their heads. A body of the villeins had entrenched themselves at North Walsham. Spencer marched against and stormed their position, being the first to enter, sword-in-hand. A furious and protracted conflict followed, ending in the defeat of the peasants, who were pursued and cut to pieces with unsparing severity. Those spared of the sword and lance Spencer strung up to the nearest tree, first receiving their hurried confession, then granting them absolution. He dispersed the revolted peasantry of Suffolk, and set a marked example to the nobility.

During these events, that man of many enemies, John of Gaunt, had retired into Scotland. So obnoxious was he to the peasantry, that when his wife, Constance of Castille, sought refuge in his Castle of Pontefract, the cowardly retainers refused to admit her, and she had to proceed through a wild country, by torchlight, for night had closed in, to her lord’s Castle of Knaresborough, where she found a safe haven until Lancaster’s return.

The ambitious prelate soon found a wider field for his arms.

When, in consequence of a division among the cardinals, two rival popes were elected, Urban VI. and Clement VII., Europe divided on the question, and France and England were naturally in opposition, the former power giving its adhesion to Clement, the latter to Urban, for England feebly strove to retain some portion of the conquests of Edward III. and the Black Prince. Clement, defeated, found refuge at Avignon, and, obedient to his protector, preached a crusade against Richard II. and the English. Urban excommunicated Clement as an anti-pope, and commissioned Bishop Spencer to conduct a crusade against him. The bishop found numerous enthusiastic supporters, and parliament met to consider whether they should ally themselves with the Flemings, or co-operate with Lancaster, from Spain, against the national enemy. The former scheme was adopted, but the French overran Flanders, and beleagured Ghent, the only town that held out against them. Immediate and energetic action was demanded, and the council resolved to support the bishop, who proposed to drive the French out of Flanders, and then carry the war into their own country. For this purpose certain subsidies were be paid to him.

The bishop, however, altered his mind, and proposed, in return for the fifteenth granted by the laity, to serve one year with 2,500 men-at-arms and 2,500 mounted archers. His offer being accepted, William de Beaucham was appointed his lieutenant, and in the month of May, 1383, he carried a body of troops, and numerous volunteers, to Calais, where he awaited the arrival of his lieutenant with the remainder of the forces. These were delayed, it was alleged by the design of John of Gaunt, and the bishop had no alternative but to employ his headstrong and impatient crusaders. Gravelines was assaulted, and carried.

Dunkirk immediately surrendered, but the Count of Flanders, engaged in the interests of France, marched against the crusaders. Sir Hugh de Calverley had reinforced the bishop, and a battle ensued, resulting in the defeat of the enemy, and the surrender of Cassel, Dixmuyde, Bourburg, Newport, and Popperen.