The three main engagements of the war were all within about sixteen miles of each other, centred on the Battles of Laing's Nek (28 January 1881), Ingogo River (8 February 1881) and the rout at Majuba Hill (27 February 1881). These battles were the result of Colley's attempts to relieve the besieged forts. Although he had requested reinforcements, these would not reach him until mid-February. Colley was, however, convinced that the garrisons would not survive until then. Consequently, at Newcastle, near the Transvaal border, he mustered a relief column (the Natal Field Force) of available men, although this amounted to only 1,200 troops. Colley's force was further weakened in that few were mounted, a serious disadvantage in the terrain and for that type of warfare. Most Boers were mounted and good riders. Nonetheless, Colley's force set out on 24 January 1881 northward for Laing's Nek "en route" to relieve Wakkerstroom and Standerton, the nearest forts.