Spin!
I read an interesting article on BBC website this week by Saul David.
According to reports of the time, Chard was "a useless Officer" and Bromhead was "popular and good at anything, (but soldiering!")
The importance of Rorke's Drift was highlighted for the benefit of the public at home who had been dumbstruck (quote) by the defeat earlier at Isandhlwana. Shamefully, Chelmsford covered up his mistakes with blatant lies, saying Col. Durnford had disobeyed orders, when Durnford had not been given any! Chelmsford was told that Isandhlwana was being over-run but he ignored the warning - an Artillery Officer and his unit and an Infantry company DID turn back, on the Officer's own initiative, but was ordered back to the main column by Lord C., saying the warning was "a false alarm"! Out of 1750 British and Native troops, only 400 survived the Zulu assault.
It was Commissary Dalton who alone managed to persuade Chard & Bromhead to stand and fight at RD as these two Officers had wanted to immediately abandon the small outpost,and flee. It was also Dalton who largely helped to organise the planning for defence.
For his initiative and bravery, he was left off the first list of VC's issued, and only awarded one about a year later after huge pressure in the Press. He died 7 years afterwards.
The British Government did NOT want a war with the Zulus - Sir Bartle Frere forced their hand and took unilateral action. His reason was he had desired a South African Confederation and a standing army of 40k Zulus would have been a threat to that political strategy.
Chelmsford only kept his post (he was promoted later!)as he had the ear of Queen Victoria who liked him. The Government was defeated in a General Election the following year.