It's not just Africa. Take a look at the Ukrainian battlefield and you will see a similar trend: kilometers of trenches with some concrete bunkers here and there; even longer anti-tank ditches; along them dragon's teeth-type anti-tank obstacles; along them several rows of concertina razor wire; plus anti-drone netting along logistical routes. then there's vehicles with layers of cages, spikes and metal plates all over them to protect against drones, to the point where they look like medieval rams. with all the high tech precision weapons and satellites and drones, people sometimes forget that wars are about dealing and withstanding kinetic force.