Direct proof of use
CSIS documented the 9M113 Konkurs in Houthi-aligned service during the Yemen war, citing multiple videos that purportedly showed Houthi militants using AT-5 anti-tank guided missiles against Saudi armor in northern Yemen and southern Saudi Arabia. Its report also cited a 2016 United Nations Panel of Experts finding of video evidence showing Houthi fighters using a Konkurs ATGM against a Saudi tank along the Saudi border.
The same CSIS section identified the system as the Soviet AT-5 Spandrel family and noted Iran's Tosan as a domestic Konkurs variant. That distinction matters for Yemen: public evidence includes both battlefield use claims involving AT-5/Konkurs systems and separate seizure or transfer evidence involving Konkurs missiles and Tosan rockets.
Sources: CSIS Missile War in Yemen
Timeline
By August 2015, CSIS reported that Houthi propaganda videos were already showing anti-tank guided missile attacks against Saudi tanks. On September 26, 2015, ARES reported a maritime interdiction off Oman whose cargo included 9M113 Konkurs missiles and related equipment, while noting uncertainty over whether Yemen was the direct destination or part of a wider smuggling route. In February 2016, the Washington Institute described Houthi and Saleh-loyalist missile teams equipped with 9M113 Konkurs, 9M133 Kornet-E, and Toophan missiles as active on the Saudi-Yemen border.
Sources: CSIS Missile War in Yemen, ARES Saudi-led Coalition Seizure, Washington Institute Ground War
Battlefield role
In the 2014 Yemen Civil War, the Konkurs appears in public reporting as a Houthi-aligned anti-armor weapon rather than merely an inventory item. The supported use cases are border fighting and strikes on Saudi armor, especially in the northern Yemen and southern Saudi Arabia theater where Houthi and allied forces used anti-tank guided missile teams during raids and defensive actions.
The Washington Institute described the broader tactical effect of these missile teams: Konkurs, Kornet-E, and Toophan-equipped units helped knock out Saudi tanks, vehicles, border posts, and watchtowers, enabling small Houthi and pro-Saleh infantry groups to raid across the border. CSIS places Konkurs within the same anti-tank missile ecosystem and provides the more specific evidence link to a Konkurs ATGM used against a Saudi tank.
Sources: CSIS Missile War in Yemen, Washington Institute Ground War