After starting the mission, head to Bampeve Plantation. It is good to use stealth mode here, because if you sound the alarm, it will make the whole mission more difficult for you. Moreover, watch out for the gunship flying over the map (you will read more about it on the next page). The former Mbele soldier that you seek should be located in the north-eastern part of the village. You can find him inside one of the buildings or outdoors, in the place marked on the screen above. You will know the target by his black beret.
If you want to finish the mission quickly, you can kill the soldier. The best weapon to use would be a silenced rifle with a telescope. However, a better idea is to Fulton the enemy while he's still alive. This way you will complete one of the optional objectives. Start crawling towards the buildings where the soldier is. It is best to attack him when he is inside a building or when he stops behind one. Before you Fulton him, make sure that there are no enemies nearby, because they may see the balloon (you can also neutralize them or wait until they walk away from the place from which you want to Fulton the soldier).