Fishhook (Cambodia)

US intelligence agencies believed that the Central Office for South Vietnam (COSVN), the PAVN's political and military headquarters was also located within the Fishhook.

[1] On 18 March 1969, the Fishhook was the target of Operation Breakfast, a raid by 48 B-52 Stratofortress bombers, in the first phase of the secret bombing of Cambodia.

The Army of the Republic of Vietnam (ARVN) 3rd Airborne Brigade air assaulted into the area north of the Fishhook to seal off escape routes and begin operations to the south.

[2]: 222 All elements then conducted search and interdiction operations to locate and exploit PAVN lines of communication and cache sites.

[2]: 222  The attack did not discover COSVN, but instead found "The City", a vast logistics area covering 3 square km, comprising 182 storage bunkers containing 1282 individual weapons, 202 crew-served weapons, 30 tons of rice and large amounts of ammunition and explosives.