Trench warfare
Trench warfare has become archetypically associated with the First World War of 1914–1918, when the Race to the Sea rapidly expanded trench use on the Western Front starting in September 1914. By the end of October 1914 the whole front in Belgium and France had solidified into lines of trenches, which lasted until the last weeks of the war. Mass infantry assaults were futile in the face of artillery fire as well as rapid rifle and machine-gun fire. Both sides concentrated on breaking up enemy attacks and on protecting their own troops by digging deep into the ground. Trench warfare also took place on other fronts, including in Italy and at Gallipoli.
Koos de la Rey
Having realised that the traditional Boer tactic of fighting from higher ground exposed them to the superior British artillery, de la Rey insisted that his men and Prinsloo's Free-Staters dig in on the banks of the Modder and Riet Rivers, the first use of trench warfare in the war. The plan was to hold fire until the British had approached close enough for the Boers' advantage in rifle fire to take effect, while making it difficult for the full force of the British artillery to be used. In the early hours the British troops advanced across the plain unopposed, but Prinsloo's men opened fire at long range, the troops took cover and the artillery pounded the Boer trenches. A series of British rushes pushed the Free-Staters back across the ford, and only a counter-attack led by de la Rey enabled the Boers to hold the field until dusk, when they slipped away. De la Rey was wounded and his son Adriaan was killed; he blamed Cronjé for failing to send reinforcements.