The article recounts a series of military campaigns led by Khalid ibn al-Walid during the early Muslim conquest of Iraq. Acting under Caliph Abu Bakr’s directive, Khalid began his operations through Upper Iraq with the strategic goal of capturing Hira, which became the base for subsequent advances. Following the victory at Hira, Khalid moved to secure other key locations including Anbar, Ayn al-Tamr, Dumat al-Jandal, Husayd, Musayyakh, and Firaz, each holding significant military and trade importance.

At Anbar, Khalid overcame fortified defenses, while at Ayn al-Tamr he captured the opposing commander, leading to a swift surrender. His intervention at Dumat al-Jandal relieved besieged Muslim forces and secured a vital junction linking Iraq, Syria, and Arabia. Later victories at Husayd and Musayyakh dismantled new Persian-Arab coalitions attempting to resist Muslim rule. The campaign culminated at Firaz, where Muslim forces defeated a combined Roman, Persian, and Arab army.

These victories, culminating in the Battle of Firaz in the 12th Hijri year, effectively ended major resistance in Iraq and solidified Muslim authority across the region.