I couldn’t find an earlier trainer used in Israel, but the Tzukit, a (presumably) hopped-up Fouga Magister, saw action. Per Wiki:
The Israeli Air Force operated a license-manufactured version, the IAI Tzukit. While principally a trainer, it was used in the 1967 Six Day War by 147 Squadron as a close support aircraft, attacking targets on the Egyptian front during the first day of the war, when Israel’s more capable combat aircraft were deployed on Operation Focus against Arab air bases. They were then deployed against Jordanian forces, including armour, on the West Bank. The Magister proved effective at the close-support mission albeit with heavy casualties, with six being lost.
And elsewhere in El Salvador (same cite):
9 former Israeli and 3 French Magisters were acquired by the Salvadoran Air Force and used as both trainers and ground attack aircraft in the Salvadoran Civil War using bombs and nose-mounted 7.62mm machine guns. None are recorded as being lost to enemy fire, but only five were in operational condition by the end of the war.