Hundreds of Mounties are set to gather in Langley, B.C. today to honour their fallen colleague, Const. Adrian Oliver.

Oliver, 28, was killed on-duty on Nov. 13 when his unmarked cruiser was hit by a transport truck in Surrey. His death captured attention the attention of Canadians and condolences poured in from across the country.

Dignitaries in attendance include RCMP Commissioner Bob Paulson, Justice Minister Shirely Bond and Surrey Mayor Diane Watts. Const. Oliver's twin brother is also scheduled to deliver a speech.

Oliver's death was the first on-duty fatality for Surrey RCMP since 1975.

The regimental funeral will start with a march at 12 p.m. and the ceremony will begin an hour later.

Twitter reacts to Const. Adrian Oliver's regimental funeral:

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  • Hundreds of Mounties line up in funeral procession for Cst. Adrian Oliver.

Related on HuffPost:

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  • Adrian Oliver, dressed as Batman, with his twin brother, Ben, as children.

  • Const. Adrian Oliver's twin brother is also an RCMP officer in the Lower Mainland.

  • <a href="http://www.huffingtonpost.ca/2012/11/13/adrian-oliver-killed-rcmp-surrey-truck-crash-mountie_n_2121920.html?utm_hp_ref=canada-british-columbia">Const. Adrian Oliver</a> was killed on Nov. 13, 2012 when his unmarked RCMP cruiser collided with a semi in Surrey, B.C.

  • Adrian Oliver joined the Surrey RCMP detachment in 2009.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver and his twin brother, Ben, modelled together before joining the RCMP.

  • Adrian Oliver and his twin brother, Ben, modelled together before joining the RCMP.

  • Adrian Oliver and his twin brother, Ben, modelled together before joining the RCMP.

  • Const. Adrian Oliver's twin brother is also an RCMP officer in the Lower Mainland.

  • Const. Adrian Oliver's twin brother is also an RCMP officer in the Lower Mainland.

  • Const. Adrian Oliver's twin brother is also an RCMP officer in the Lower Mainland.

  • Adrian Oliver and his twin brother, Ben, modelled together before joining the RCMP.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver was a model before joining the RCMP.

  • Adrian Oliver's locker at work.

  • Flowers are laid outside the Surrey RCMP detachment.

  • Condolences have been pouring into the Surrey RCMP detachment where Const. Adrian Oliver was based.