|Part of the Yemeni civil war (2015–present)|
|Casualties and losses|
The Ma'rib campaign is a campaign for control of the Ma'rib Governorate of Yemen, between the Houthis and Yemen Army units loyal to Ali Abdullah Saleh on one side, and militiamen and Yemen Army units loyal to Abdrabbuh Mansur Hadi on the other side.
In September 2015, Saudi-backed Yemeni forces loyal to the government of Abdrabbuh Mansur Hadi engaged Houthi forces and successfully established control over the eastern and western regions of Marib province. They took territory in Sirwah and Hareeb including the Hailan mountain, Al Ateef, Al Makhdarah, and Al Masaryah hill.
Mar'ib is of particular strategic importance in the conflict because it is a center for oil & gas production in Yemen; the powerplants of Mar'ib supply power to a significant part of the country and a gas pipeline passes south through Marib to the Gulf of Aden and the Red Sea. The Safer Exploration and Production Operations Company and other foreign companies who work in the energy sector are based in Mar'ib. 45 Emirati soldiers, 10 Saudis and 5 Bahrainis were killed when a Houthi missile crashed into the coalition base at Safer in September 2015.
The 2015 missile strike marked an escalation in the conflict. In the months that followed, coalition air strikes targeted more civilian sites than military targets. During the 18 month period, between 26 March 2015 and 2 August 2016 there were nearly 500 attacks in Mar'ib, which was located at the frontline of the battle between coalition and Houthi forces. In 2016 the Yemen Data Project reported that Saudi air raids had hit a market in Sirwah twenty-four times.
In October, Xinhua reported that Houthi forces had killed Major General Abdel Rab al-Shadadi, a high-level pro-government commander. Several prominent Houthis, including militia leaders Hussain al-Mutawakel and Abu Jabar Ahmad al-Houthi, were captured by coalition forces. Coalition forces fought with Houthis for control over the route that runs from Yemen's capital Sanaa through Sirwah to Mar'ib.
US drone strikes were reported in early 2017 after the election of President Donald Trump. This marked the first U.S. engagement in Yemen since the failed Yakla raid. In November 2017 the New York Times reported that Mar'ib was "an island of relative calm".
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