Shattiwaza first ran to Babylon, then to Hittite. King Hittite married his daughter to Shattiwaza. Suppiluliuma signed a treaty with Shattiwaza. Dragonfly As I sit in heaven canvas and poster. Then Piyashshili, the son of Suppiluliuma, helped the Shattiwaza back to Mitanni. The Hittite Army overcomes the Euphrate, fighting the Irrdu people in Hurrite. Hittite troops won. Meanwhile, the Assyria army moved to Washukanni. It seems that Mitanni has asked the Assyria Institute to fight the Hittite, but Assyria refuses. Shuttarna surrendered to Hittite. The Assyrians retreated to avoid facing Hittite’s powerful forces. Shattiwaza became king of Mitanni. However, the government is controlled by Hittite and the territory is narrowed. Hittite takes advantage of Mitanni to fight Assyria.