Classical unified field theories describe the properties of the electromagnetic field as a purely geometric phenomenon. Einstein tried to form a generalized theory of gravitation that would unify the gravitational and electromagnetic forces (and perhaps others), guided by a belief in a single origin for the entire set of physical laws. These attempts initially concentrated on additional geometric notions such as vierbeins and "distant parallelism", but eventually centered around treating both the metric tensor and the affine connection as fundamental fields. (Because they are not independent, the metric-affine theory was somewhat complicated.) In general relativity, these fields are symmetric (in the matrix sense), but
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