Protection Forces/Macedonia (UNPROFOR/M), a joint Nordic unit consisting of a mechanized infantry company from Sweden, Norway and Finland, as well as a joint staff and train company from these countries. In mid-1993, American troops were sent to Macedonia and were put under Isberg's command. This was the first a Swedish officer commanded American soldiers. In 1993, Isberg was also appointed commanding officer of the Norrbotten Engineer Corps (Ing 3) and the Haparanda Border Regiment (Haparanda gränsregemente) (that consisted of the 2nd brigade of the Norrbotten Regiment) which comprised more than 6,000 men. In the 1990s, he also served as adviser in Bulgaria. In 1996, Isberg served in the Bosnia Army Corps Staff of the Implementation Force (IFOR). Isberg was promoted to senior colonel in 1997v and served at the Swedish Armed Forces Headquarters in Stockholm from 1997 to 1999: as head of the Program Department (1997–1998), as head of the Ground Warfare Department in the Joint Forces Directorate (Krigsförbandsledningen) (1998–1999). Isberg served as Senior Military Adviser at the United Nations Special Mission to Afghanistan (UNSMA) from 1999 to 2000 and from 2001 to 2003 he served as head of the Baltic Cooperation Department at the Swedish Armed Forces Headquarters. Congo In 2003, the UN decided to seriously deal with the war in the Congo. It had been going on for six years and the situation in northeastern Congo in 2003 was described as a slow-going genocide. Although a peace agreement had been signed in 2002, it was broken by militia groups in the eastern part of the country. Isberg arrived in Kinshasa, the capital of the Democratic Republic of the Congo (DRC) in late July 2003 to take up his post as deputy force commander of the UN peacekeeping mission in the DRC, known as MONUC. On 21 August 2003, Isberg was appointed acting commander of the Ituri Brigade - the UN force that took over on 1 September from the French-led Interim Emergency Multinational Force (IEMF) that had completed its mandate of securing the eastern town in Bunia in the embattled Ituri District. Overall, Isberg commanded 5,000 men in the Ituri District. The Ituri Brigade included personnel from Morocco, Bangladesh, Nepal and Pakistan; an Indian aviation unit; and a Bangladeshi and Indonesian engineering unit. In October 2003, Isberg, superseded as brigade commander by a Pakistani brigadier general, returned to his regular position at the MONUC headquarters in Kinshasa, a