The South African Republic Police, known in the original Dutch as the Zuid-Afrikaansche Republiek Politie was the police force of the short-lived Transvaal Republic

South African Republic

The South African Republic , often informally known as the Transvaal Republic, was an independent Boer-ruled country in Southern Africa during the second half of the 19th century. Not to be confused with the present-day Republic of South Africa, it occupied the area later known as the South African...

http://152.111.1.251/argief/berigte/beeld/2000/05/13/6/14.html, one of several independent Boer

Boer

Boer is the Dutch and Afrikaans word for farmer, which came to denote the descendants of the Dutch-speaking settlers of the eastern Cape frontier in Southern Africa during the 18th century, as well as those who left the Cape Colony during the 19th century to settle in the Orange Free State,...

 republics of the mid-to-late 19th century. Members of the police force were known as ZARPs. After the Union of South Africa

Union of South Africa

The Union of South Africa is the historic predecessor to the present-day Republic of South Africa. It came into being on 31 May 1910 with the unification of the previously separate colonies of the Cape, Natal, Transvaal and the Orange Free State...

 was established in 1910, the force was incorporated into the South African Police Force which was later known simply as the South African Police

South African Police

The South African Police was the country's police force until 1994. The SAP traced its origin to the Dutch Watch, a paramilitary organization formed by settlers in the Cape in 1655, initially to protect civilians against attack and later to maintain law and order...

http://www.sahistory.org.za/pages/governence-projects/organisations/sap/SAP-history.htm.