Direct proof of use
The BTR-70 is documented in the 2014 Yemen Civil War through reporting on Sudanese ground-force deployments to the Saudi-led coalition. The Washington Institute reported that, in mid-October 2015, UAE landing craft moved two Sudanese battalions equipped with BTR-70 armored personnel carriers from Assab in Eritrea to Aden in southern Yemen.
The same account describes the Sudanese units taking responsibility for security in Aden as UAE forces pulled back to bases, with a third Sudanese battalion arriving on 7 November 2015 to secure al-Anad Air Base. A regional-security paper by Shaul Shay gives the arrival date as 17 October 2015 and repeats that the Sudanese battalions arrived in Aden equipped with BTR-70 armored personnel carriers.
Sources: Washington Institute Ground War, RUNI Saudi-Sudan Alliance Paper
Timeline
The public record supports a narrow sequence. Sudanese forces joined the coalition ground deployment around Aden in October 2015, after coalition-backed forces had pushed Houthi and Saleh-aligned forces out of the port city earlier that year.
Reuters reporting carried by Voice of America said a Sudanese battalion arrived by sea in Aden on 17 October 2015, with Sudanese and coalition officials framing the deployment as support for the Saudi-led coalition and city security. The BTR-70-specific sources then identify the Sudanese force package as mechanized battalions equipped with BTR-70 APCs and place those vehicles in the Assab-to-Aden deployment route.
Sources: VOA Reuters Sudanese Troops, Washington Institute Ground War, RUNI Saudi-Sudan Alliance Paper
Role in the war
In Yemen, the BTR-70 appears as a coalition troop carrier and protected mobility vehicle rather than as a separately documented assault vehicle. The cited reports connect the vehicles to Sudanese battalions assigned to hold security in Aden and later to the wider Sudanese brigade-size presence around Aden and al-Anad.
The sources do not establish a confirmed BTR-70 firing incident, loss, or named tactical action in Yemen. They support fielding by Sudanese units on the Yemeni-government and Saudi-led coalition side, movement by UAE vessels from Assab to Aden, and security duties after the UAE reduced its direct ground presence in the city.
Sources: Washington Institute Ground War, RUNI Saudi-Sudan Alliance Paper, VOA Reuters Sudanese Troops