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  2. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    Ordinal numbers may be written in English with numerals and letter suffixes: 1st, 2nd or 2d, 3rd or 3d, 4th, 11th, 21st, 101st, 477th, etc., with the suffix acting as an ordinal indicator. Written dates often omit the suffix, although it is nevertheless pronounced. For example: 5 November 1605 (pronounced "the fifth of November ...

  3. 2nd Brigade Combat Team, 1st Cavalry Division (United States)

    en.wikipedia.org/wiki/2nd_Brigade_Combat_Team,_1...

    This article incorporates public domain material from Headquarters, 2d Brigade Combat Team, 1st Cavalry Division Lineage and Honors. United States Army Center of Military History . ^ "Heraldry - Special Troops Battalion, 2 Brigade Combat Team, 1 Cavalry Division" .

  4. List of planar symmetry groups - Wikipedia

    en.wikipedia.org/wiki/List_of_planar_symmetry_groups

    The 17 wallpaper groups, with finite fundamental domains, are given by International notation, orbifold notation, and Coxeter notation, classified by the 5 Bravais lattices in the plane: square, oblique (parallelogrammatic), hexagonal (equilateral triangular), rectangular (centered rhombic), and rhombic (centered rectangular).

  5. 2nd Brigade Combat Team, 1st Armored Division (United States)

    en.wikipedia.org/wiki/2nd_Brigade_Combat_Team,_1...

    The 2nd Brigade Combat Team, 1st Armored Division is an Armored Brigade Combat Team of the United States Army, stationed at Fort Bliss, TX. First organized in 1942, as Combat Command B, 1st Armored Division, the unit fought in North Africa and Italy in World War 2, in Operation Desert Storm and in Operation Iraqi Freedom.

  6. Point groups in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Point_groups_in_two_dimensions

    The 2D symmetry groups correspond to the isometry groups, except that symmetry according to O(2) and SO(2) can only be distinguished in the generalized symmetry concept applicable for vector fields. Also, depending on application, homogeneity up to arbitrarily fine detail in transverse direction may be considered equivalent to full homogeneity ...

  7. 2nd Brigade Combat Team, 1st Infantry Division - Wikipedia

    en.wikipedia.org/wiki/2nd_Brigade_Combat_Team,_1...

    On 28 March 2008, the 3rd Brigade, 1st Armored Division (HBCT) inactivated at Fort Riley. The soldiers and equipment currently assigned were reflagged as 2d (Dagger) Brigade, 1st Infantry Division (HBCT), aligning all units on Fort Riley under the 1st Infantry Division.

  8. 2nd Theater Signal Brigade (United States) - Wikipedia

    en.wikipedia.org/wiki/2nd_Theater_Signal_Brigade...

    Redesignated 27 April 1961 as Headquarters and Headquarters Detachment, 2d Signal Group Activated 21 June 1961 at Fort Bragg, North Carolina Inactivated 23 October 1971 at Fort Lewis, Washington Activated 1 June 1974 in Germany Redesignated 1 October 1979 as Headquarters and Headquarters Company, 2d Signal Brigade

  9. Explosives shipping classification system - Wikipedia

    en.wikipedia.org/wiki/Explosives_shipping...

    1.2D Hand grenades, shaped charges 1.2E Rockets with bursting charges 1.2F 1.2G Large fireworks, practice grenades 1.2H White phosphorus grenades 1.2J 1.2K Chemical shells 1.2L Hypergolic fuelled rocket motors 1.3 Fire, minor blast: 1.3C Smokeless powder, rocket motors 1.3F Fuzed hand grenades 1.3G Display Fireworks, smoke grenades, flares 1.3H ...