** 25px 1st Battalion

** Rufus Isaacs, 1st Marquess of Reading, the Attorney General

** David Lloyd George, 1st Earl Lloyd-George of Dwyfor, the Chancellor of the Exchequer

** Herbert Samuel, 1st Viscount Samuel, Postmaster General ; was falsely implicated.

** Afonso, 8th Count of Barcelos, 1st Duke of Braganza ( 1442 ).

** Ferdinand II, 3rd Duke of Braganza and 1st Duke of Guimarães ( 1475 ).

** John I, 6th Duke of Braganza and 1st Duke of Barcelos ( 1562 ).

** 1st Foreign Regiment ( 1 < sup > e </ sup > RE ), based in Aubagne

** 1st Foreign Cavalry Regiment ( 1 < sup > e </ sup > REC ), based in Orange, Vaucluse ( armoured troops )

** 1st Foreign Engineer Regiment ( 1 < sup > e </ sup > REG ), based in Laudun

** Mishnaic Hebrew – Post Temple Roman Era ( 1st through 4th Century CE )

** Arthur Wellesley, 1st Duke of Wellington

** Frederic Maugham, 1st Viscount Maugham, English statesman, the eldest son of the previous

** Adiabene ( 1st to 2nd c. AD )

** Hatra ( 1st to 2nd c. AD )

** ( formerly MV 1st Lt. Baldomero Lopez )

** ( formerly MV 1st Lt. Jack Lummus )

** The United States Post Office Department ( later renamed the United States Postal Service ) begins the 3rd regular airmail service in the world ( between New York City, Philadelphia and Washington, DC ), the 1st being from Allahabad to Naini Junction in India on the 18th February 1911 and the 2nd being from London to Windsor Castle on the 22nd June 1911.

** Thomas Manners, 1st Earl of Rutland ( d. 1543 )

** WWII: At Camp Hood, Texas, future baseball star and 1st Lt. Jackie Robinson is arrested and later court-martialed for refusing to move to the back of a segregated U. S. Army bus.

** Hermann Göring is captured by the United States Army. Marines of 1st Marine Division Battle of Okinawa | fighting on Okinawa, May 1945.

** Nigeria becomes a republic ; The 1st Republican Constitution is established

** Sylvanus Olympio, 1st President of Togo, assassination ( b. 1902 )

** Jo Bonner, American U. S. Representative for Alabama's 1st congressional district

** Tuanku Abdul Rahman ibni Almarhum Tuanku Muhammad, 1st Yang di-Pertuan Agong of Malaysia, dies in office.

** Shershen class torpedo boat with four 533mm heavyweight torpedo tubes 4 or 5

** Yevgenya class minesweeper MH1 2

** Polnocny class landing ship 3

** Geopolymers, a class of synthetic aluminosilicate materials

** EAS Hyperion, a starship in the Hyperion class

** USS Harpers Ferry ( LSD-49 ), a Harpers Ferry class dock landing ship of the United States Navy, commissioned in 1995

** Russian aircraft carrier Admiral Kuznetsov, the only completed ship of this class

** Perth class destroyer, a class of warship used by the Royal Australian Navy

** Extract Class moves part of the code from an existing class into a new class.

** Separable ordinary differential equation, a class of equations that can be separated into a pair of integrals

** Separable partial differential equation, a class of equations that can be broken down into differential equations in fewer independent variables

** Spinel: MgAl < sub > 2 </ sub > O < sub > 4 </ sub >, after which this class of minerals is named

** Pre-primary school ( Ages 5 – 6 ) At the age of five, children normally attend the pre primary class, which prepares them to join Primary school

** Comedy of manners – satirizes the manners and affectations of a social class, often represented by stock characters.

** Terminator ( character concept ), a fictional class of autonomous robots in the series

** The N class blimp ZPG-3W of the U. S. Navy is destroyed during a storm over Massachusetts.

** At the 1992 Democratic National Convention, Bill Clinton accepts his party's presidential nomination on behalf of the " forgotten middle class ".

** Ulysses S. Grant graduates from West Point 21st from a class of 39.

** John J. Peck graduates from West Point 8th from a class of 39.

** Aurora class battleship, a ship in the Stargate franchise

** Date ( metadata ), a representation term or class associated with a data element

** Sunfish class destroyer, a type of destroyer

** Nerve agent or nerve gases, class of phosphorus-containing organic chemicals ( organophosphates ) that disrupt the mechanism by which nerves transfer messages to organs