 Complete the following phrase:  The first contingent, an infantry company, arrived in South Africa in late November 1899, and served with the Australian Regiment guarding a railway line. After being mounted, the unit fought in operations around Colesberg, and in the march to Bloemfontein, where it joined the second contingent to form the South Australian Mounted Rifles. The second contingent, a mounted squadron, had arrived in South Africa in late February 1900, participating in the suppression of a Boer uprising before joining the march to Bloemfontein. The SAMR, as part of the 1st Mounted Infantry Brigade, participated in the capture of Johannesburg and Pretoria, the 