New Babylonia, referred to as Pashe, had a total of eleven kings spanning less than 150 years. Initially plagued by the rule of a number of petty kings, it wasn't until the throne had succeeded to its first great king, Nebuchadrezzer I (1146-1123) that this new Babylonia began its traction in the direction of regaining long lost prestige. Blood-hungry for vengeance, the Pashe king declared his intent to wage two wars against the very two kingdoms that wracked ruin upon his nation: Assyria and Elam.
In Babylon, the Kassites had fully embraced and were embraced by the temples, learnt of the native tongue, and practice-tablets were used to conduct their full integration into the nation's faith. In Isin, administrative tasks were taught to overseers that once mastered were sent to other areas of the kingdom to manage organized governmental policy of the king. Dresswear advanced as the Kassite culture fully blended with the Pashe and a new cultural identity was bred out of the pain this generation and its previous ones had endured.
Lastly, new weapons that included sharper metal carved arrows, longer ranged bows, stern maces, and daggers were fashioned for the soldiery that had been waiting for a strong leader to call upon them to strike back against their invaders.
At this time, Assyria faced hardships within her dominion, the Mushkai people (former Hittites that migrated within Assyria's borders) began to rebel, and overran two key outposts, Purukuzzi and Alzi, creating civil unrest. Elam on the other hand cooled on its encroachment of Babylonia, especially as defensive armed forces grew under new Pashe organization.
This powder keg readied explode as the leverage of the two oppressors waned, and a new Babylonian "hero" was born in Nebuchadrezzer. Elam did not approve. Shilhak-In-Shushinak, king of Elam, invaded further into Babylonia where he was met in battle by Nebuchadrezzer along the banks of the Ukni River, in the southeast. It was April when Nebuchadrezzer and his forces were soundly beaten and driven back, and whilst a valiant stand was made, the invading Elamite units were much too battle-tested by the comparison of Nebuchadrezzer's hot-blooded youths.
No choice than to consolidate his remaining forces in a grand retreat back to the capital, Babylon, with the Elamite army potentially on his trail, the bold young leader prayed before Marduk, seeking out an answer for his people.