Iran–Iraq War
Operation Karbala-9
Sulaymaniyah, Iraq
The Iranians used a combination of semi-guerrilla and infiltration tactics in the Kurdish mountains with the Peshmerga. During Operation Karbala-9 in early April, Iran captured territory near Suleimaniya, provoking a severe poison gas counter-attack, and during Operation Karbala-10, Iran attacked near the same area, capturing more territory.