Titled Operation London Bridge, the plan reportedly lists what will happen in the United Kingdom followingthe monarch’s death.

Now that the news of her death has been made public, the plan states that the UK will go into a period of mourning over the next 10 days as her funeral arrangements are made.

Per Politico, the state funeral will be held at Westminster Abbey, before she is moved to her final resting place Windsor Castle’s King George VI Memorial Chapel.

Here’s everything to know about Operation London Bridge.

When did Operation London Bridge start?

The code phrase for a royal death dates back to the death ofQueen ElizabethII’s fatherKing George VIin 1952. At the time, his code phrase was “Hyde Park Corner,” which alerted key government officials of his death.

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Since then, other code phrases have been put in place for prominent members of the royal family, including Operation Tay Bridge forThe Queen Mother, and Operation Forth Bridge forPrince Philip.

Queen Elizabeth’s code phrase is Operation London Bridge, whileher son Prince Charles' is reportedly Operation Menai Bridge.

Queen Elizabeth.Chris jackson/PA

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How is Operation London Bridge enacted?

From there, Young will contact the prime minister,Elizabeth Truss, giving the code phrase “London Bridge is down” to signal her death.

Who else is informed of Queen Elizabeth’s death through Operation London Bridge?

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Prince Charles, Prince of Wales and Queen Elizabeth II attend the Royal Company of Archers Reddendo Parade in the gardens of the Palace of Holyroodhouse

From the Foreign Office’s Global Response Centre, the news of the queen’s death will go out to “the 15 governments outside the UK where the Queen is also the head of state, and the 36 other nations of the Commonwealth for whom she has served as a symbolic figurehead,“The Guardianreports. World leaders, ambassadors, governors general, and more heads of state will also be notified.

How will the general public learn about Queen Elizabeth’s death?

After selected officials have been informed ofQueen Elizabeth’s death through Operation London Bridge, the official announcement for the general public will go out through a newsflash to the Press Association and global media outlets.

On Sept. 8,The Royal Family made an official announcementabout her death on Twitter which read: “The Queen died peacefully at Balmoral this afternoon. The King and The Queen Consort will remain at Balmoral this evening and will return to London tomorrow.”

The prime minister will be the first government official to make a statement. The prime minister will then meet with the new monarch,Prince Charles, and the royal would deliver a speech to the nation at 6 p.m. on the evening followingQueen Elizabeth’s death.

When will Queen Elizabeth’s funeral take place?

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Queen’s diamond jubilee galleries at Westminster Abbey, London, UK - 29 May 2018

If she were to die in Scotland, which iswhere she is currently residing at Balmoral Castle, Operation Unicorn would reportedly be enacted. PerThe Independent, the plan outlines that if the Queen dies at her residence in Scotland, the Scottish Parliament will be immediately suspended and authorities will be “given 36 hours to prepare for a motion of condolence in the chamber.”

From there, she will be transported to Holyroodhouse, then St Giles' Cathedral, before her coffin is ultimately taken to Waverley Station and transported on the Royal Train to London.

Where will Queen Elizabeth’s funeral take place?

source: people.com