A Houthi ballistic missile attack on a Saudi-run training base in Shabwa province in Yemen on October 19 killed at least 75 people and wounded more than 200, including Saudi soldiers.
Saudi and Yemeni officials briefed on the attack say it is the deadliest Houthi attack of the new war.
Three missiles hit the al-Alam camp within minutes, just as Saudi officers began training newly recruited local forces.
Witnesses said four battalions were gathering when the first missile hit, and one of the later missiles hit the recruits as they ran from the first blast.
Drones circled the base days before.
Relatives of the dead and wounded accused the local Yemeni commander of ignoring these warnings.
Officials said the camp has no air defense or early warning systems, and authorities are now pressing Riyadh to quickly provide them.