The Senussi are a Muslim religious order in Italian-occupied Libya. Partly thanks to the influence of Turkish agents, they have crossed into Egypt, where they hope to provoke an uprising against the British occupiers. The Senussi have had some success against the British, forcing them to retreat eastwards. But now the British are striking back. Near Marsa Matruh British forces have attacked Senussi fighters.
Unlike the Senussi, the British have armoured cars and artillery pieces but the fighting is surprisingly even until the arrival of an Australian cavalry unit. The balance now shifts against the Senussi, who take to their heels.