Complex sentence: A detachment of fifty cavalry from Alexandria were taken at the same time that Rahmanieh surrendered this effectually cut off all communication between Alexandria and the interior of Egypt; the allied forces suffered no greater loss than five killed and 26 wounded.
Split into simpler sentences: A detachment of fifty cavalry from Alexandria were taken at the same time. With this vital capture this effectually cut off all communication between Alexandria and the interior of Egypt; the allied forces suffered no greater loss than five killed and 26 wounded.