Forebu was formed on 23 December 2015[2] following a failed military coup against Nkurunziza's government in May 2015 and a subsequent period of unrest.
The group recruited members from the ex-soldiers purged from the Burundian Army in the aftermath of the coup, many of whom had fled into the eastern Congo.
[1] Forebu was led from its inception by Jérémie Ntiranyibagira and the groups administration was run by Edouard Nshimirimana.
[1] It is known to have been active in Fizi and Uvira territories in the Congolese province of South Kivu near the Burundian frontier.
[3] Four senior leaders of the FPB, including Ntiranyibagira and Nshimirimana, were arrested in Tanzania in October 2017 and extradicted almost immediately to Burundi.