Direct proof of use
The Type 77 heavy machine gun appears in the 2014 Yemen Civil War record through two connected strands of evidence. Oryx listed 12.7 mm Type 77 guns among equipment in Yemeni Army service before the 2014-2015 Houthi takeover and described the inventory as equipment available to Yemeni parties on the battlefield.
The direct combat-use evidence is broader Type 77-family evidence rather than a separately confirmed baseline Type 77 incident. TopWar reported that Chinese Type 85 and W85 12.7 mm heavy machine guns, the successor and export branches of the Type 77 family, were used by regular army units and insurgent forces in civil-war fighting in Yemen.
Sources: Oryx Pre-war Yemeni Fighting Vehicles, TopWar Chinese 12.7mm Machine Guns
Timeline
Before the Houthi takeover, Yemeni Army stocks included Type 77 12.7 mm guns. Oryx published that inventory in September 2015, after the conflict had widened into a Saudi-led coalition intervention, and framed the list as a record of pre-war military equipment then available to Yemeni battlefield parties.
Later reporting on Chinese 12.7 mm heavy machine guns identified Type 85 and W85 guns in Yemeni civil-war use. That places the supported conflict role in the family category: crew-served heavy machine guns used for ground fire support and, where mounted and elevated, anti-aircraft or air-defense fire.
Sources: Oryx Pre-war Yemeni Fighting Vehicles, TopWar Chinese 12.7mm Machine Guns, WeaponSystems Type 77
Narrative
The Type 77 is a Chinese 12.7x108 mm belt-fed heavy machine gun designed for tripod-mounted infantry use with both ground and anti-aircraft firing positions. WeaponSystems.net describes the Type 85 as the improved version of the Type 77, while TopWar identifies W85 as an export version associated with the same Chinese 12.7 mm heavy machine-gun lineage.
In Yemen, the cataloged role is therefore conservative: Type 77 guns were present in pre-war Yemeni Army stocks, and related Type 85/W85 guns are reported in civil-war service with regular and insurgent forces. The sources support availability, fielding, and family-level combat use, but they do not identify a dated Yemen incident in which a baseline Type 77, as distinct from a Type 85 or W85, was fired.
Sources: Oryx Pre-war Yemeni Fighting Vehicles, TopWar Chinese 12.7mm Machine Guns, WeaponSystems Type 77
