Operation Attleboro was a search and destroy operation by the 196th Light Infantry Brigade. The operation was named after Attleboro, Massachusetts, where the brigade had been formed. Operation Attleboro turned out to be the largest series of air mobile operations to date and involved all or elements of the 196th Light Infantry Brigade, 25th Division 1st Infantry Division, a brigade of the 4th Division, as well as numerous Army of the Republic of Vietnam and Regional Forces/Popular Forces and Nungs. In the end, the operation became a Corps operation commanded by II Field Forces. U.S. military spokesmen claimed that the most significant result of Operation Attleboro was the severe blow struck against the communists' supply system.