Operation Manta is the code name for the French military intervention in Chad between 1983 and 1984, during the Chadian-Libyan conflict. The operation was prompted by the invasion of Chad by a joint force of Libyan units and Chadian Transitional Government of National Unity (GUNT) rebels in June 1983. While France was at first reluctant to participate, the Libyan air-bombing of the strategic oasis of Faya-Largeau starting on July 31 led to the assembling in Chad of 3,500 French troops, the biggest French intervention since the end of the colonial era.