Zulu is a 1964 British epic adventure action war film depicting the Battle of Rorke’s Drift between a detachment of the British Army and the Zulu in 1879, during the Anglo-Zulu War, in which 150 British soldiers, 30 of whom were sick and wounded, at a remote outpost, held off a force of 4,000 Zulu warriors.

… By 2007, critics were divided over whether the movie should be seen as deeply anti-imperialist or as racist.[32] … In 2010, Alex von Tunzelmann of The Guardian gave the film a grade of B, saying: “The Zulus are a mystery, the Welsh are misplaced, a Victoria Cross recipient is slandered, and no one has enough facial hair. Nonetheless, Zulu is a brilliantly made dramatisation of Rorke’s Drift, and it does a fine job of capturing the spirit for which the battle is remembered.”

https://en.wikipedia.org/wiki/Zulu_(1964_film)

tbh I found it hard to empathize with the British. But it was interesting to watch two-rank and three-rank volley fire being executed, especially as compared to the Zulu rifle use. (Although note there are limits to the historical accuracy of the film.) There was also a class conflict theme between the two British officers, one an upper-class “inheritor” of his post, the other a military engineering officer who achived his post more meritocratically. And of course there were distinctions between the English, the Welsh, the Boers, and their allied “native contingent”. Overall, this movie is great as a starting point to inspire further reading, less so as a work that makes a worthwhile point by itself.

BONUS MOVIE: Zulu Dawn (1979) - a prequel to this movie, showing the battle that happened beforehand: https://www.youtube.com/watch?v=r1tMgptVe7I (720p); another copy: https://www.dailymotion.com/video/x8fy43j (720p); https://en.wikipedia.org/wiki/Zulu_Dawn