The "Buffalo Horns" Tactic
Shaka creatively organized the Zulu army into a tactical formation imitating the shape of a buffalo’s head: the "chest" met and pinned the enemy head-on, the "horns" encircled the enemy’s rear from both flanks, and the "loins" reserve stood ready to support — this "buffalo horns" tactic greatly raised the combat efficiency of the Zulu army and was thereafter long a classic military tactical paradigm that the tribes of southern Africa vied to study and imitate.
The Mfecane and the Reorganization of Southern Africa
The rapid expansion of the Zulu Kingdom under Shaka set off a chain reaction of many surrounding tribes being forced to migrate, reorganize, and even war with one another; this historical period known as the "Mfecane" (the great scattering) caused a drastic reshaping of the population pattern and political map of vast areas of southern Africa, and the later-rising Matabele Kingdom, Basotho Kingdom, and other southern African states all had a deep historical origin in this chain reaction.