The first open conflict between the British and Boers began in November 1880 in Potchefstroom. P. L. Bezuidenhout refused to pay extra fees on his wagon saying he already paid his taxes. The British authorities then confiscated the wagon. On 11 November 1880 a commando of 100 men under P. A. Cronje took back the wagon from the British bailiff and returned it to Bezuidenhout.
Following this, between 8 000 and 10 000 Boers gathered at Paardekraal, near Krugersdorp on 8 December 1880. As a result a triumvirate of leaders; Paul Kruger, Piet Joubert and M. W. Pretorius were appointed. On 13 December 1880 the leaders proclaimed the restoration of the Transvaal Republic and three days later raised their Vierkleur flag at Heidelberg, thus rejecting British authority. The events of the 13 December 1880 thus in effect started the war and ended passive resistance.
The first shots were fired in Potchefstroom. The Boers had about 7 000 soldiers, and some Free Staters joined their fellow Boers against the British enemy. There were only about 1 800 British soldiers stationed in towns across the Transvaal so British were outnumbered.
There were 4 main battles and several sieges during the First Anglo-Boer War. The Battles were at Bronkhorstspruit, Laingsnek, Schuinshoogte (Ingogo) and Majuba. The sieges were at Potchefstroom, Pretoria, Marabastad, Lydenburg, Rustenburg, Standerton and Wakkerstroom.
Early in the war it became clear that the colonisers had underestimated their opponents. They had assumed that the Boers were no match for the superior might of the British military force. The Boers had the advantage of knowing the local terrain. They were skilled with firearms because they hunted often. The red British uniforms made soldiers easy targets while the Boers who simply wore their civilian clothing, had good enemy cover.
At the battles of Laingsnek and Schuinshoogte the British forces suffered heavy losses and had to retreat. Major-General Sir George Pomeroy Colley had to wait for more reinforcements. Sir Evelyn Wood was appointed as his second-in-command, and Colley wanted him to lead in the extra soldiers from Newcastle. On 16 February 1881 Colley agreed to stop fighting on condition that the Boers gave up their hopes of requiring independence of the Transvaal. Negotiations came to nothing. On 26 February 1881 Colley decided to march on Majuba with 554 men, where the Boers had an outpost.
On the same day, General Piet Joubert and the Boer forces took up a position at Laing's Nek to check on the arrival of British reinforcements. Colley’s men reached the top of the mountain in the early hours of the morning and were very tired. From the hill Colley could see the Boer laager of tents and covered wagons, but as he could not bring his heavy guns up the steep slopes, he was unable to fire on their encampment. Joubert, however, immediately ordered his men to climb the steep hill, take cover and shoot down on the British. At 7 a.m., a force of 150 Boers in three divisions under veld-cornets S J Roos, J Ferreira and D J Malan began to climb from ledge to ledge up the mountain, firing steadily and effectively on the British as they climbed. Untrained in guerrilla warfare, the exposed British soldiers made easy marks, and when Colley himself was killed and the Boers were almost at the summit, the British fled.
The magnitude of their defencelessness may be appraised from the fact that they had over 200 casualties killed and wounded, whereas the Boers lost only one man killed and one who died later of his wounds. There are two simple monuments on the battlefield: an obelisk erected by the Boers, and a rectangular column commemorating the British fatalities. The humiliating British defeat at Majuba brought about the end of the First Anglo-Boer War and introduced a short-lived peace. Gladstone's Liberal government abandoned the previous government's federation policy, and, by the signing of the Pretoria Convention in August 1881, the Transvaal was granted 'complete self-government, subject to the suzerainty of Her Majesty Queen Victoria'. Many British, however, assured of the innate power of their imperial status, continued to regard the Boer commandos as inferior adversaries. Looking on the Majuba Hill disaster as a 'freak' victory, they vowed retribution.
The Transvaal War was a 'curtain-raiser' to the far more ruthless Anglo-Boer War of 1899-1902. "Remember Majuba!" became a rallying cry of the British during Second Anglo-Boer War.