From Dancing in the Glory of Monsters: The Collapse of the Congo and the Great War of Africa, by Jason Stearns (Public Affairs, 2011), Kindle Loc. 2126-2158:
There were few memorable battles for the rebels as they crossed the country. Bukavu was one of the fiercer ones, as the Zairian army tried to put up some resistance; later, they knew better. Goma fell quickly as a result of treason, as Mobutu’s officers sold equipment and intelligence to their enemies in the months prior to the invasion and then did little to defend the town. Simultaneously, Ugandan troops had crossed the border to the north and taken the town of Mahagi with only thirty soldiers. A rebel commander told me that three of his men on a motorcycle defeated two hundred Mobutu soldiers in another town in the northeast.
Where there was resistance, it was often because of foreign troops. Rwandan ex-FAR [Forces Armées Rwandaises] were fighting alongside the Zairian army, trying to protect the retreating refugees. In Kindu, along the upper reaches of the Congo River, over a thousand ex-FAR joined Mobutu’s troops, although they were poorly coordinated and soon scattered. Mobutu’s officers, however, had not given up. They decided to make a stand in Kisangani, the country’s third largest city and the gateway to the east, located at a bend in the Congo River. The city had a long airstrip and was a major river port. The army’s high command flew in reinforcements and also mined the airport and the main roads leading to town from the east. Diplomats speculated that Mobutu would be history if the town fell.
Mobutu’s generals began frantically organizing other foreign support. Using their contacts in Belgrade and Paris, they managed to hire around 280 mercenaries, mostly French and Serbs, under the command of Belgian colonel Christian Tavernier, along with some attack helicopters and artillery.
It was too little, too late. The area they had to cover was too large, and the Zairian army too disorganized for them to have much impact. The soldiers of fortune were also perhaps not of the best quality. A French analyst described them as a mixture between “Frederick Forsyth’s ‘dogs of war’ and the Keystone Kops.” He went on to disparage the Serbs’ performance in particular: “They spent their days getting drunk and aimlessly harassing civilians. They did not have proper maps, they spoke neither French nor Swahili, and soon most of them were sick with dysentery and malaria.”
Tavernier chose as his operational base Watsa, a remote town in the northeast that had little strategic importance, but where he had obtained mining rights. The colonel himself was seen more often in the upscale Memling Hotel in Kinshasa than on the battlefield, haranguing foreign correspondents, boasting of his feats, and complaining of government ineptitude.
Internal tensions also hampered operations. The French, mostly former soldiers from the Foreign Legion, were better connected and paid up to five times as much as the Serbs—up to $10,000 per month for the officers. But the Serbs controlled most of the aircraft and heavy weaponry, old machines leased at inflated prices from the Yugoslav army. The French accused their counterparts of amateurism; the Serbs retorted that the last time the French had won a serious battle was at Austerlitz in 1805.
On the battlefield, everything fell apart. The Serbs never provided the air support the French demanded, complaining of missing parts and a lack of fuel. On several occasions, they even bombed Mobutu’s retreating troops, killing dozens. Mobutu’s security advisor remembered the episode: “We had two different delegations from Zaire recruiting mercenaries separately. What was the result? We had mercenaries from different countries who spoke different languages…. We bought weapons from different countries that didn’t work together. It was a veritable Tower of Babel.”
The mercenaries behaved abysmally toward the local population. Even today, residents of Kisangani remember the deranged Serbian commander Colonel Jugoslav “Yugo” Petrusic, driving about town in his jeep, harassing civilians. He shot and killed two evangelical preachers who annoyed him with their megaphone-blasted prayers. He was sure that AFDL rebels had infiltrated Kisangani, and he arrested civilians for interrogation, subjecting them to electroshocks from a car battery and prodding them with a bayonet.