Read the account here --->
This is a good read touching on issues like:
Comradeship: 'I wish I could express here what I saw the men must have felt for one another. The whole thing was most heartrending.'
Loyalty: 'it was impossible for us to get any guides, and we had to rely for the path which led to Benin on two human beings—one being a dumb man and the other a small slave boy,' - F.Roth (Expedition surgeon).