Although belonging to the Bronze Age, the Hittites were forerunners of the Iron Age, developing the manufacture of iron products from as early as the 14th century BC, when letters to foreign rulers reveal the demand for their iron goods. The Hittites were not, however, the first to work iron, and iron remained a precious metal throughout the history of their empire.
Shamshi-Adad was a great organizer, keeping firm control on all matters of state, from high policy down to appointing officials and dispatching provisions. His campaigns were meticulously planned, and his army knew all the classic methods of siegecraft, such as encircling ramparts and battering rams. Spies and propaganda were often used to win over rival cities. However, his empire lacked cohesion and when news of his death spread, old rivals set out at once to topple his sons from the throne.