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The rank of a symmetry group is closely related to the complexity of the object (a molecule, a crystal structure) being under the action of the group. If G is a crystallographic point group, then rank(G) is up to 3. [9] If G is a wallpaper group, then rank(G) = 2 to 4. The only wallpaper-group type of rank 4 is p2mm. [10]
When the ranks of the RAF were designed, an officer with the rank of group captain (equivalent to colonel and naval captain) commanded such a unit, although by the time of World War II, many groups were commanded by air commodores (equivalent to brigadiers/brigadier generals and commodores) or air vice-marshals (equivalent to major generals and ...
However, national rank structures might differentiate from this. In the U.S. armed forces warrant officer is a separate and distinct category of officers. This officer rank and precedence is below those of officer personnel, but above that of non-officer personnel, and has a special group of codes (W-1 – W-5). [4]
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The nominal group technique (NGT) is a group process involving problem identification, solution generation, and decision-making. [1] It can be used in groups of many sizes, who want to make their decision quickly, as by a vote, but want everyone's opinions taken into account (as opposed to traditional voting, where only the largest group is considered). [2]
Veterans rank is different in each country. Members of the United States military maintain their highest rank after discharge or retirement. 10 U.S. Code § 772(e) states: A person not on active duty who served honorably in time of war in the Army, Navy, Air Force, or Marine Corps may bear the title and wear the uniform of the highest grade ...
Group captain (Gp Capt or G/C) is a senior officer rank used by some air forces, with origins from the Royal Air Force. [1] The rank is used by air forces of many countries that have historical British influence. Group captain is immediately senior to wing commander and immediately below air commodore.
NATO maintains a "standard rank scale" in an attempt to match every member country's military rank to corresponding ranks used by the other members. The rank categories were established in the document STANAG 2116, formally titled NATO Codes for Grades of Military Personnel.