Original sentence: After this, the SADF withdrew the bulk of their forces.In 1987 as part of the MPLA's struggle for dominion over Angola, the group launched a campaign to rout UNITA forces from their stronghold cities of Mavinga, a former Portuguese military base and Jamba in the southeast of the country just above the Caprivi Strip.In October 1987 the South African government responded to the FAPLA/Soviet offensive by launching a series of military operations in conjunction with UNITA forces, beginning with Operation Modular
Edited sentence: In 1987 as part of the Angolan government's repeated campaigns for the control of south-eastern Angola, the Angolan army launched a campaign to rout UNITA forces from their stronghold cities of Mavinga, a former Portuguese military base and Jamba in the southeast of the country just above the Caprivi Strip.In October 1987, after initial sucesses of the Angolan campaign, the South African government intervened on behalf of UNITA by launching a series of military operations in conjunction with UNITA forces, beginning with Operation Modular.Unable to gain any further ground, the SADF withdrew the bulk of their forces