When the legend becomes fact, print the legend.
Yes, 150 British soldiers, many injured, did successfully hold off 4,000 Zulu warriors at the Battle of Rorke’s Drift during the late 1880’s.
Now, did the two sides honor the other’s bravery through song near the end of the bloody conflict?
It’s a movie, and one of the more goosebump-inducing final scenes in film history, so give director Cy Endfield some leeway.
I mean, has there ever really been a 100% correct historical epic in the annuals of cinema? Not likely.
Sometimes, you just nod, say, “Good job, chaps,” and marinate in the moment.