I have been thinking about the Durnford / Chelmsford situation.
The argument. Was Durnford ordered to take command of the camp. Or reinforce the camp.
If Durnford had taken command of the camp he would have stayed in the camp.
If Durnford had reinforced the camp, he would have stayed in the camp.
Regardless of which order he was given,both instructed him to stay in the camp.
But he does seem to have taken it upon self to leave the camp and protect Chelmsford's rear. When really there was no need. In stead he depleted the force at isandlwana and coursed the fire line to be come over extended when he needed their support to cover his retreat back to the camp.