This is the closest setup I got playing Rorke’s Drift with Khartoum-Zulu mod in Napoleon Total War: 205 british against 1200 zulu warriors. Below 205 british soldiers I am not able to cover Rorke’s Drift perimeter that includes the hospital and Commisariat Stores and also since zulu is controlled by 2 AI players, AI attacks simultaneously instead of waves of zulu warriors as it’s shown in the film Zulu 1964 by Enfield.
The order of battle is inspired on the book: Rorke’s Drift 1879 ’Pinned like rats in a hole’ by Ian Knight, Campaign Series 41, Osprey Military:
British forces: (205)
1 x Rorke’s Drift Regiment General (John Chard, Royal Engineers)
2 x 24th Regiment
2 x 2nd Warwickshire
2 x Irregulars (Bromhead Squadron)
8 x Private Welch
Zulu forces: (1200)
5 x Udhloko
6 x Ndhlondhlo
5 x UThulwana
The historical numbers of each side were the following:
British forces: 141
Zulu forces: 3700 aprox.