In 118 BC, the Numidian king Micipsa died and left his kingdom to three heirs. His two sons Adherbal and Hiempsal I shared power with their illegitimate nephew Jugurtha. The new arrangement fractured immediately after Micipsa's death. Jugurtha moved quickly to eliminate his rivals. He sent agents to assassinate Hiempsal I in a brutal act of political violence. Adherbal fled to Rome seeking protection from the Senate. Jugurtha declared open war on his cousin and defeated him in battle. This conflict marked the beginning of a long struggle for control over North Africa.
Bribes In The Senate
Roman officials accepted money from Jugurtha during peace negotiations starting in 116 BC. Lucius Opimius led a commission tasked with dividing Numidia fairly between Adherbal and Jugurtha. The bribery ensured Jugurtha received the fertile western half while Adherbal got the poorer eastern territory. When Adherbal resisted this outcome, Jugurtha attacked again in 113 BC. He besieged Adherbal inside Cirta until provisions ran out. Roman citizens defending the city were executed along with their king. The deaths sparked outrage among commoners at home but did not stop the corruption. A tribune named Gaius Memmius demanded an investigation into the treaty terms.Consuls Who Failed
Lucius Calpurnius Bestia commanded Roman forces against Jugurtha in 112 BC. He negotiated a lenient treaty that restored Numidia intact to Jugurtha in exchange for bribes. The treaty included only a small fine and the return of war-elephants which Jugurtha later bought back cheaply. Spurius Postumius Albinus took command the following year and failed to act energetically. His brother Aulus Postumius Albinus marched into the Sahara desert in mid-winter. Jugurtha lured the Romans into disadvantageous terrain where half the army was killed. Survivors passed under a yoke as a symbol of surrender. The Senate refused to honor this capitulation and continued the war.