I came across this PowerPoint presentation some time ago, Have a look see what you think. There are some very interesting pictures. There is one of the lay out of the British camp at Isandlwana which I had never seen until I found this document.
http://faculty.smu.edu/dwilson/ANTHCF3388/PPT_pdf/19_Zulu_War.pdf
Thanks Admin for your PM with regards to placing the presentation here.