 He then became commander of an infantry battalion in Assen.In 1994 Karremans was appointed as commander of Dutchbat III battalion that was deployed to the Srebrenica enclave as a part of the peacekeeping mission, under command of the United Nations in operation United Nations Protection Force (UNPROFOR).On 11, 12 and 13 July, the enclave was captured by Serb soldiers, while the Dutch battalion was stationed there.