Scorched earth
A scorched-earth policy is a military strategy that aims to destroy anything that might be useful to the enemy while it is advancing through or withdrawing from a location. Any assets that could be used by the enemy may be targeted, for example food sources, water supplies, transportation, communications, industrial resources, and even the locale's people themselves.
Samori Ture
Ture shifted his base of operations eastward, toward the Bandama and Comoe River in Dabakala. He instituted a scorched earth policy, devastating each area before he evacuated it. Though this manoeuvre cut Ture off from Sierra Leone and Liberia, his last sources of modern weapons, it also delayed French pursuit. After the spring of 1893, the French partially succeeded in cutting off Ture's sources of weapons which was supplied by the British traders since the late 1880s. Ture tried to negotiate with the British in their colonial domains in Ghana to work against the French interest, but the British would not intervene directly against France.