155 mm Creusot Long Tom part of the war the time fuses did not work properly. Case shot was used as a last resort when the enemy's foot soldiers were close to the gun. Case shot was effective up to 400 metres. During the Second Boer War the guns were deployed as field guns and siege guns at Vaal Krantz, Ladysmith, Mafeking, Kimberley and Bergendal. During the early stages of the war these guns gave the Boers an advantage as they had longer range than any British guns that were deployed in South Africa at the time. After all their ammunition had been expended, the
Siege of Kimberley residents, forcing many to take shelter in the Kimberley Mine. The British military had to change its strategy for the war as public opinion demanded that the sieges of Kimberley, Ladysmith and Mafeking be relieved before the Boer capitals were assaulted. The first attempt at relief of Kimberley under Lord Methuen was stopped at the battles of Modder River and Magersfontein. The 124-day siege was finally relieved on 15 February 1900 by a cavalry division under Lieutenant-General John French, part of a larger force under Lord Roberts. The battle against the Boer general Piet Cronjé continued at Paardeberg immediately after