Did the Boer War teach Britain only the wrong lessons?

Did the Boer War teach Britain only the wrong lessons for the First World War?

No; it exposed equipment failures and helped prompt the Haldane reforms, though it did not produce enough capable officers for the later war.

The question argues that the Boer War imposed losses without teaching Britain useful lessons for 1914. The record was mixed rather than empty. The war produced some capable officers and revealed how poorly equipped the British Army was, helping to drive the Haldane reforms. Those gains and people were not sufficient for the demands of the First World War, but the institution did learn from the conflict.