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This article is a list of known military operations of the Vietnam War in 1966, conducted by the armed forces of the Republic of Vietnam, the United States and their allies.
Date Duration Operation Name Unit(s) – Description Location VC–PAVN KIA Allied KIAs 1966 Operation Lightning Bug USAF air interdiction operations Jan 1 – 8 Operation Marauder/Operation An Dan 564 1st Infantry Division, 173rd Airborne Brigade, 1st Battalion, Royal Australian Regiment and ARVN operation in Plain of Reeds area of the Mekong Delta Hậu Nghĩa Province 268 15 US, 31 ARVN Jan 1 – 18 Operation Jefferson A combined ROK 2nd Marine Brigade and paratroops of ARVN 47th Regiment search and destroy operation Phú Yên Province Jan 1 – 20 Operation Matador III 1/1 Cavalry search and destroy operation along the Cambodian border Kon Tum and Pleiku Provinces Jan 3 – 4 Operation War Bonnet 2nd Battalion, 9th Marines and 3rd Tank Battalion search and destroy operation Quảng Nam Province Jan 3 – 8 Operation Hang Over 2nd Battalion, 327th Infantry Regiment search and destroy operation Ninh Thuận Province Jan 3 – 8 Operation Long Lance 1st Battalion, 1st Marines search and destroy operation Quảng Nam Province Jan 3 – 8 Operation Quick Kick 1st Brigade, 1st Infantry Division search and destroy operation Bình Dương Province Jan 8 – 14 Operation Crimp Operation by two brigades of the 1st Infantry Division and the 1st Battalion, Royal Australian Regiment Ho Bo Woods, 20 km north of Cu Chi, Bình Dương Province 129 22 Jan 9 – 11 Operation Flying Tiger VI ARVN and ROK Capital Division search and destroy operation Bình Định Province 192 11 Jan 11 – 14 Operation Quick Kick II 1st Brigade, 1st Infantry Division search and destroy operation Bình Dương Province Jan 11 – 17 Operation Mallard 1st Battalion, 3rd Marines and 3rd Battalion, 7th Marines search and destroy operation An Hoa, Quảng Nam Province Jan 12 – 25 Operation Short Fuse 2/1 Cavalry search and destroy operation Tây Ninh Province Jan 12 – 31 Operation Buckskin 3rd Brigade, 1st Infantry Division search and destroy operation. Follow-up to Operation Crimp Ho Bo Woods to the north and west of Cu Chi 93 Jan 13 – 17 Operation Matador II 2/1 Cavalry search and destroy operation Bình Định, Kon Tum and Pleiku Provinces Jan 13 – 17 Operation Quick Hop/Operation Tyler 2nd Battalion, 327th Airborne Infantry Regiment search and destroy operation Bình Thuận Province Jan 15 – 17 Operation Big Lodge 2nd Battalion, 9th Marines search and destroy operation Quảng Nam Province Jan 15 – 19 Operation Red Ball IV 1st Brigade, 1st Infantry Division resupply operation III Corps Jan 17 – 18 Operation Pioneer I 2nd Battalion, 16th Infantry Regiment search and destroy operation Biên Hòa Province Jan 18 – 20 Operation Retriever I 173rd Airborne Brigade search and destroy operation Binh Hoa and Bình Dương Provinces Jan 19 – Feb 21 Operation Van Buren 101st Airborne Division, ROK 2nd Marine Brigade and ARVN 47th Regiment rice security operation Phú Yên Province 679 54 US, 45 ROK Jan 20 – 24 Operation Kamehameha I 3rd Brigade, 25th Infantry Division security operation along Route 19 Pleiku Province Jan 24 – 26 Operation Pioneer II 2nd Brigade, 1st Infantry Division search and destroy operation Biên Hòa Province Jan 24 – 26 Operation Quick Kick III 1st Brigade, 1st Infantry Division search and destroy operation Bình Dương Province Jan 24 – 30 Operation Retriever II 173rd Airborne Brigade search and destroy operation Binh Hoa and Bình Dương Provinces Jan 24 – Mar 6 Operation Masher/White Wing/Thang Phong II 1st Cavalry Division, ARVN 22nd Division Airborne Brigade and 1st Regiment ROK Capital Division operation USMC Operation Double Eagle links in cross border segment Bình Định Province 2389 288 US, 10 ROK, 119 ARVN Jan 28 – Feb 1 Operation Red Ball V 1st Brigade, 1st Infantry Division resupply operation Bình Dương Province Jan 28 – Feb 15 Operation Mallet 2nd Brigade, 1st Infantry Division search and destroy operation to open Route 15 Long Khánh Province Jan 28 – Feb 17 Operation Double Eagle 3rd Battalion, 1st Marines, 2nd Battalion, 3rd Marines, 2nd Battalion, 4th Marines, 2nd Battalion, 9th Marines operation linking in with Operation Masher/White Wing, Operation Lien Ket 22 and Operation Thang Phuong II Quảng Ngãi and Quảng Trị Provinces 312 24 Jan 29 – 31 Operation Kamehameha II 3rd Brigade, 25th Infantry Division security operation along Route 19 Pleiku Province Jan 30 – 31 Operation Bobcat US search and destroy operation III Corps Jan 30 – Feb 3 Operation Bobcat Tracker 2nd Brigade, 25th Infantry Division search and destroy operation Hậu Nghĩa Province Feb Operation Reconstruction 1st Brigade, 101st Airborne Division, ROK 2nd Marine Brigade and ARVN 47th Regiment search and destroy operation south of Tuy Hòa Phú Yên Province Feb 3 – 9 Operation Quick Kick IV 1st Brigade, 1st Infantry Division search and destroy operation Bình Dương Province Feb 3 – 15 Operation Taro Leaf 2nd Brigade, 25th Infantry Division search and destroy operation Hậu Nghĩa Province Feb 4- 9 Operation Roundhouse 173rd Airborne Brigade and 1st Battalion, Royal Australian Regiment search and destroy operation Biên Hòa and Bình Dương Provinces Feb 5 – 8 Operation Taylor 3rd Brigade, 25th Infantry Division search and destroy and road clearing operation Kon Tum and Pleiku Provinces Feb 6 – Mar 6 Operation Thừa Thiên 177 ARVN operation Thừa Thiên Province 183 17 Feb 7 – 11 Operation Road Runner VI 3rd Brigade, 1st Infantry Division road clearing and security operation along Route 13 north of Bến Cát District, Bình Dương Province Feb 7 – 16 Operation Taut Bow 3rd Reconnaissance Battalion reconnaissance in force operation "Happy Valley", Quảng Nam Province Feb 7 – May 1972 Operation Shed Light USAF programme to develop night and adverse weather interdiction capabilities South Vietnam & Laos Feb 8 – 9 Operation Bald Eagle 3rd Brigade, 1st Infantry Division search and destroy operation III Corps Feb 9 – 21 Operation Kamehameha III 3rd Brigade, 25th Infantry Division security operation along Route 19 Bình Định and Pleiku Provinces Feb 11 – 28 Operation Eagle's ClawBattle for the Kim Son Valley 1st Cavalry Division operation Bình Định Province 340 172 Feb 11 – Mar 2 Operation Rolling Stone 1st Infantry Brigade, 1st Battalion, Royal Australian Regiment and the New Zealand artillery combined search and destroy, road repair, and pacification operation 30 km northwest of Bien Hoa Air Base, Bình Dương Province 154 11 US Feb 12 – 16 Operation Entree 173rd Airborne Brigade search and destroy operation Biên Hòa Province Feb 12 – 16 Operation Evansville 1st Infantry Division search and destroy operation Bình Dương Province Feb 13 Operation An Dan 14/66 ARVN operation Long An Province 150 21 Feb 14 – 16 Operation Breezeway 1st Battalion, 16th Infantry Regiment road clearing and security operation along Route 13 Bình Dương Province Feb 14 – 16 Operation Paddy Bridge 2nd Battalion, 27th Infantry Regiment search and destroy operation Hậu Nghĩa Province Feb 15 – 21 Operation Thang Long 234 ARVN operation Darlac Province 270 62 Feb 17 – 28 Operation Double Eagle II BLT 3rd Battalion, 1st Marines and 3rd Battalion, 12th Marines search and destroy operation to engage the 1st VC Regiment Que Son Valley 125 Feb 18 – 19 Operation Belt Line 3rd Brigade, 1st Infantry Division road clearing and security operation along Route 13 Bình Dương Province Feb 21 – 27 Operation Mastiff 2nd and 3rd Brigades, 1st Infantry Division search and destroy operation Michelin Rubber Plantation and the Boi Loi woods, Bình Dương, Binh Long and Tây Ninh Provinces Feb 22 – 24 Operation Clean Sweep I 2nd Brigade, 25th Infantry Division and ARVN 49th Regiment search and destroy operation Cu Chi area 11 5 US Feb 22 – Mar 2 Operation Lam Son 235 2 Regiments of the ARVN 1st Division search and destroy operation Quảng Trị Province 444 35 Feb 25 – Mar 24 Operation Garfield 3rd Brigade, 25th Infantry Division operation Darlac Province 124 17 Feb 26 – 28 Operation Kolchak I 2nd Brigade, 25th Infantry Division search and destroy operation Hậu Nghĩa Province 5 Feb 26 – Mar 1 Operation Phoenix 173rd Airborne Brigade search and destroy operation Biên Hòa Province 15 Feb 26 – Mar 24 Operation Harrison 1st Brigade, 101st Airborne Division search and clear operation Tuy Hòa area, Phú Yên Province 285 42 Feb 27 – Mar 3 Operation New York 2nd Battalion, 1st Marines, and HMM-163 sweep operation joining with ARVN Operation Thừa Thiên 177 east of Phu Bai, Thừa Thiên Province 122 15 Mar 1 – 2 Operation Beer Barrel 3rd Brigade, 1st Infantry Division road security operation Bình Dương Province Mar 1 – 5 Operation Black Horse 2/1 Cavalry search and destroy operation Bình Định Province Mar 1 – 5 Operation Hattiesburg 2nd Brigade, 1st Infantry Division search and destroy operation Tây Ninh Province Mar 3 – 6 Operation Red Ball VI 1st Brigade, 1st Infantry Division route security for resupply convoys Biên Hòa and Bình Dương Provinces Mar 3 – 7 Operation Cocoa Beach 3rd Brigade, 1st Infantry Division search and destroy operation Bình Dương Province 199 15 Mar 4 Operation Waikiki 2nd Brigade, 25th Infantry Division search and destroy operation Hậu Nghĩa Province Mar 4 – 7 Operation Utah/Operation Lien Ket 26 3rd Battalion, 1st Marines, 2nd Battalion, 4th Marines, 1st Battalion, 7th Marines, 2nd Battalion, 7th Marines and ARVN 2nd Division search and destroy operation against the PAVN 36th Regiment and VC Main Force units operation. First USMC contact with the NVA 11 km northwest of Quảng Ngãi City, 632 83 US, 32 ARVN Mar 6 – 8 Operation Boston 3rd Brigade, 1st Infantry Division search and destroy operation Bình Dương Province Mar 7 – 24 Operation Silver City 1st Brigade, 1st Infantry Division, 173rd Airborne Brigade, 1st Battalion, Royal Australian Regiment and ARVN 10th Division search and destroy operation. Major enemy unit encountered is the VC 271st Main Force Regiment along the Song Be River, Bình Dương Province/Long Khánh Province border area 336 107 Mar 7 – 28 Operation Jim Bowie 2/1 Cavalry and 3/1 Cavalry search and destroy operation Bình Định Province Mar 9 – 10 Operation Los Angeles 3rd Brigade, 1st Infantry Division route and convoy security operation along Route 13 Bình Dương Province Mar 12 Operation Toledo 3rd Brigade, 1st Infantry Division security operation III Corps 11 9 Mar 13 – 15 Operation Tampa (1966) 3rd Brigade, 1st Infantry Division security operation III Corps Mar 13 – 17 Operation Salem 1st Battalion, 18th Infantry Regiment search and destroy operation III Corps Mar 14 – 19 Operation Honolulu 2nd Brigade, 25th Infantry Division search and destroy operation Cu Chi, Hậu Nghĩa Province Mar 14 – 21 Operation Buchanan/Operation Wyatt Earp/Operation Kam IV 2/1 Cavalry 2nd Battalion, 35th Infantry Regiment reconnaissance in force and security operation along Route 19 II Corps Mar 14 – 21 Operation Wyatt Earp 2/1 Cavalry and 2nd Battalion, 35th Infantry Regiment reconnaissance in force and security operation on Route 19 II Corps Mar 17 – 18 Operation Wheaton 2nd Brigade, 1st Infantry Division operation III Corps Mar 17 - 18 Operation Massachusetts 2nd Battalion, 4th Marines Mar 18 – 19 Operation Palestine 3rd Brigade, 1st Infantry Division security operation III Corps Mar 20 – 23 Operation Oregon 2nd Battalion, 1st Marines and 1st Battalion, 4th Marines search and destroy operation Quảng Trị Province Mar 20 – 24 Operation Cuu Long 15 ARVN operation Kien Tuong Province 219 3 Mar 20 – 25 Operation Texas/Operation Lien Ket 28 3rd Battalion, 1st Marines, 3rd Battalion, 7th Marines, 2nd Battalion, 4th Marines, ARVN 5th Airborne Battalion and Republic of Vietnam Marine Corps combined reaction force operation landing near An Hoa to encounter the 60th and 90th battalions of the 1st VC Regiment and the 11th Battalion, 21st NVA Regiment An Hoa 623 99 Mar 20 – 28 Operation Kings 3rd Battalion, 3rd Marines, 2nd Battalion, 9th Marines and 3rd Tank Battalion search and destroy oper