Yep, though of course theirs was directed against cavalry. This is the first time I can recall a square being used against an infantry defense-—and it only worked because the Zulu had no artillery.
Great point on the infantry defense. Though if the Zulus had firearms at the level of the Lakota Sioux at Little Big Horn, I suspect they’d have made mincemeat of the British. But I can see a square being very effective against superior numbers armed only with assegais and shields.
Fast forward a couple decades, and the Boers had Krupps and Creusot artillery that gave the British fits, even without squares.