Complex sentence: A detachment of fifty cavalry from Alexandria were taken at the same time and the French were effectively cut off with all communication between Alexandria and the interior of Egypt; the allied forces suffered only five killed and 26 wounded.
Split into simpler sentences: A detachment of fifty cavalry from Alexandria were taken at the same time. With this defeat the French were effectively cut off with all communication between Alexandria and the interior of Egypt; the allied forces suffered only five killed and 26 wounded.