[PROJECT] History Lessons

I read some posts and came across a statement that quality ALWAYS wins over quantity. Although I study legal disciplines, I still heard a story from a historian about the Zulu Wars: on one side was a corps of English soldiers – professional, disciplined, and trained, equipped with the latest technology: the newest weapons, artillery (isn't that quality?), and on the other side was a huge army of the Zulu king Chaka Zulu (I think that's how his name was) – isn't that quantity? In general, during the battle, the corps was defeated, and Chaka negotiated acceptable peace terms for himself... I would like to know if the story I described actually happened and if there are other similar cases in history?