Shaka replaced the long throwing spear with a short stabbing blade (the iklwa) and discarded sandals so warriors could move faster barefoot, forcing close-quarters combat instead of distant skirmishing. He drilled regiments into a 'horns of the buffalo' formation that encircled enemies, converting a small clan into a dominant military power.
Shaka promotes commanders and warriors based on demonstrated courage and skill rather than inherited rank or lineage, binding followers to him through earned advancement. This dissolved older aristocratic claims and concentrated devotion on the leader who distributed status.
The poem presents events through the gaze of the ancestors and the collective, so individual deeds are judged by how they serve the enduring people rather than private gain. Reading history this way makes the greatness of a ruler a function of whether their actions feed the nation's permanence across generations.