Note (return) — Chapter XVI

The war now entered fully into its "blockhouse and drive" phase. The use of these expedients in combination was, it is believed, new to military history. The principle of the blockhouse had already been tentatively adopted in South Africa without much success, notably between Bloemfontein and Thabanchu, where a line of posts was established which on three occasions was cut by De Wet.55 The chief defect of the blockhouse is its vulnerability to shell fire; but by this time the Boer artillery was a negligible quantity. Its adoption on a large scale dates from the time of Lord Kitchener's taking over the command. The expedient was, in the first instance, applied to the railways as a protection against the raids to which they were subject; and after July, 1901, it was extended to the open veld. Subsidiary lines of blockhouses, which in general jutted out at right angles to the railways and in most cases ran along the cross-veld roads changing direction as circumstances required, were built. They acted as fences to obstruct or to deflect the movements of the enemy and enclosed areas greatly differing in size.