'Trusty' Triumph Model H military combo

A fine detailed photo of a Model H Triumph with wicker sidecar. It came to me with the description 'Nairobi, 1st World War'. I've got no verification of this. Certainly the period looks right, one of the riders is in uniform and the background could be vaguely tropical. Whatever the case a great image.

Triumph Model H with wicker chair doing service in Kenya.