When the camels had started, he saw his horse put on board, and then took a final stroll round the encampment.
The change that had occurred there, during the past fortnight, was striking.

Then none but black faces could be seen.

Now it was the encampment of a British force, with its white tents and all their belongings.
The contrast between the newly-arrived brigade, and the hardy veterans who had fought at the Atbara, was striking.

Bronzed and hearty, inured to heat and fatigue, the latter looked fit to go anywhere and do anything, and there was hardly a sick man in the four regiments.

On the other hand, the newcomers looked white and exhausted with the heat.
Numbers had already broken down, and the doctors at the hospital had their hands full of fever patients.