Bouvines (Wars of Philip Augustus).
Fought 1214 between the French under Philip Augustus, and the Germans, Flemish and English under Otho IV, the numbers engaged on both sides being considerable. The French gained a signal victory, which broke up the coalition and rendered the position of Philip Augustus secure on the throne of France.
Bovianum (Second[Second] Samnite War).
Fought B.C. 307 between the Romans under Titus Minucius, and the Samnites under Statius Gellius. Gellius attempted to relieve Bovianum, which the Romans were besieging, and was totally defeated, though Minucius fell in the battle. This defeat broke the Samnite power, and they sued for peace in the following year, leaving Rome without dispute the first power in Italy.
Boyaca (South American War of Independence).
Fought August 17, 1819, between the Colombian patriots under Bolivar, and the Spanish Royalists, 2,500 strong, under Colonel Barreiro. Bolivar crossed the Cordilleras, under incredible difficulties, and, eluding Barreiro, took up a position at Boyaca, cutting him off from his base at Bogota. The Spaniards attacked him, and were routed with heavy loss, Barreiro and 1,600 men being captured. The patriots lost 66 only.
Boyne, The (War of the Revolution).
Fought July 1, 1690, between the forces of William III, and the Irish under James II. William and the elder Schomberg attacked the front of James's position, while the younger Schomberg crossed the Boyne a few miles higher up, and attacked him in flank. William forced the passage of the river, and drove the Irish from their entrenchments at a cost of 500 killed and wounded, including the elder Schomberg. The Irish lost 1,500.
Braddock Down (Civil War).
Fought January 19, 1643, between the Royalists under Sir Ralph Hopton, and the Parliamentary forces under Ruthven. The latter had crossed the Tamar and occupied Liskeard, without adequate support, and was defeated by the Royalists with heavy loss.