At the time of the Second Boer War he threw himself into the Boer cause and attacked the government with characteristic violence.

The Netherlands and Germany supported the Boer cause.

During the Boer War, he supported the Boer cause in his writings.

Some Jews were among the Bittereinders ("Bitter Enders") who fought on long after the Boer cause was clearly lost.

These volunteers would have come for a number of reasons, not necessarily because of any sympathy with the Boer cause including soldiers-of-fortune, professional soldiers and adventurers.

Due to a waning interest in the Boer cause now that the war was over, the tour failed, forcing Reitz to return to the Netherlands.

And now the Boer cause appeared to be visibly tottering to its fall.

A remarkable letter was published from Piet de Wet, a man who had fought bravely for the Boer cause, to his brother, the famous general.

Considering the impossibility of replacing the men, and the fruitless waste of valuable ammunition, September 26th was an evil day for the Boer cause.

Although in a minority, some Australians were anti-imperialists, and supported the Boer cause.