permanent non-Soviet member since 1961, because of the Albanian–Soviet split, formally withdrew in 1968. Formally withdrew in September 1990. Independent
interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative
Western Front. It was later renamed Stalingrad Front, then had the Don Front split off from it. The Front was reformed from reserve armies on 22 October 1942