Classical unified field theories a survey of classical relativistic field theories of gravitation that have been motivated by theoretical concerns other than unification, see Classical theories of gravitation. For a survey of current work toward creating a quantum theory of gravitation, see quantum gravity. The early attempts at creating a unified field theory began with the Riemannian geometry of general relativity, and attempted to incorporate electromagnetic fields into a more general geometry, since ordinary Riemannian geometry seemed incapable of expressing the properties of the electromagnetic field. Einstein was not alone in his attempts to unify electromagnetism and gravity; a large number of mathematicians and
Unified Command of the area east of the canal (Egypt) first changed the force structure of the army by creating a "unified command" to oversee counterterrorism operations east of the Suez Canal. The second promoted Osama Askar, commander of the Third Field Army, both in rank and in title: he is now a lieutenant general—one of a handful in the armed forces—and in charge of the "unified command." He will also retain his seat on the SCAF. Askar’s former deputy, Muhammad Abdullah, has been appointed commander, and Tarek Anwar Helal the chief of staff, of the Third Field Army. Nasr 13 was the first manoeuvre of its type since the