According to an inscription later erected by Shalmaneser, he had started his annual campaign, leaving Nineveh on the 14th day of Iyar. He crossed both the Tigris and Euphrates without incident, receiving the submission and tribute of several cities along the way, including Aleppo. Once past Aleppo he encountered his first resistance from troops of Iruleni, king of Hamath, whom he defeated; in retribution, he plundered both the palaces and the cities of Iruleni's kingdom. Continuing his march after having sacked Qarqar, he encountered the allied forces near the Orontes River.