Middle East

Jordan marks Great Arab Revolt centennial with parade

  • Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)

    Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)  (The Associated Press)

  • Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)

    Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)  (The Associated Press)

  • Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)

    Jordanian military units parade in celebration of the 100-year anniversary of the Great Arab Revolt in Amman, Jordan on Thursday June 2, 2016. Jordan celebrates 100 years since the Great Arab Revolt, sparked by King Abdullah II's great grandfather, with a military parade of camel troops, attack helicopters and cannon fire. (AP Photo/Sam McNeil)  (The Associated Press)

Jordan has celebrated 100 years since the Great Arab Revolt, led by King Abdullah II's great-grandfather, with a military parade of troops on camel back, attack helicopters and cannon fire.

At a newly unveiled Martyr's Memorial, military units stood for inspection Thursday as the monarch walked across parade grounds, saluting troops.

A century ago, Sherif Hussein declared war on the Ottoman Empire, then in control of the Middle East.

His Hashemite family led Arab Bedouin irregulars in a British-backed guerrilla campaign made famous by Lawrence of Arabia.

New national boundaries were drawn across the region, which are now contested in the Islamic State's bloody quest for a caliphate.

Jordan's military is a key ally in a U.S.-led military coalition fighting the extremists in Iraq and Syria.