On August 2nd a train coming up from Bloemfontein was derailed by Sarel Theron and his gang some miles south of Kroonstad.

Thirty-five trucks of stores were burned, and six of the passengers (unarmed convalescent soldiers) were killed or wounded.

A body of mounted infantry followed up the Boers, who numbered eighty, and succeeded in killing and wounding several of them.
On July 21st the Boers made a determined attack upon the railhead at a point thirteen miles east of Heidelberg, where over a hundred Royal Engineers were engaged upon a bridge.

They were protected by three hundred Dublin Fusiliers under Major English.

For some hours the little party was hard pressed by the burghers, who had two field-pieces and a pom-pom.