[1]: 4 The operation began on 15 May with the 1st Brigade moving from Phu Bai Combat Base to Tam Kỳ.

[1]: 7 On 17 May at 17:25 an OH-6 light observation helicopter of Troop B, 2nd Squadron, 17th Cavalry Regiment engaged six to eight PAVN/VC, killing one.

Throughout the area of operations support aircraft received PAVN/VC antiaircraft machine gun fire.

[1]: 8 On 21 May at 05:00 Company C, 1/501st detected movement outside their night defensive position and opened fire, a sweep of the area at dawn found two dead PAVN.

After finally overrunning the position, 25 PAVN dead were found in the area, while US losses were 12 killed.

In March 2014 Santiago J. Erevia who served as a radio-telephone operator with the 1/501st was awarded the Medal of Honor for his actions on 21 May 1969.

At 12:10 a medevac helicopter of the 54th Medical Battalion was hit by anti-aircraft fire and crashed near grid reference BT 136128 (15°28′34″N 108°19′48″E / 15.476°N 108.33°E / 15.476; 108.33).

At 09:25 Company B, 1st Battalion, 502nd Infantry Regiment received small arms fire and responded killing two PAVN.

At 09:45 near grid reference BT 132078 (15°25′52″N 108°19′37″E / 15.431°N 108.327°E / 15.431; 108.327) Company C, 1/46th recovered the bodies of 12 US personnel killed during Operation Frederick Hill.

At 10:25 Brigade Forward Air Controllers called in an airstrike destroying a 12.7mm machine gun.

That afternoon the Brigade was ordered to prepare for an operation against the VC 1st Main Force Regiment in the Song Tham Valley commencing on 1 June.

At 15:30 Company D, 1/501st found the body of a U.S. soldier killed the previous day, as they prepared to evacuate it a command detonated mine was triggered and they were hit by small arms fire resulting in five U.S.

[1]: 12–3  Medic Joseph G. LaPointe Jr. was posthumously awarded the Medal of Honor for his actions during the engagement.

On 5 June at 11:10 helicopter gunships of the Division's air cavalry element sighted and engaged 24 PAVN/VC 9 miles (14 km) southeast of Tam Kỳ killing 10.

[1]: 13  On 7 June at 08:00 units of the Brigade drew small arms and mortar fire from PAVN/VC in bunkers and hedgegrows 8 miles (13 km) southwest of Tam Kỳ, the troops engaged and remained in contact until 13:20, when the PAVN/VC withdrew leaving seven dead and one crew-served and three individual weapons were captured, U.S. casualties were seven killed.

[1]: 14  At 12:10 Troop B, 2/17th Cavalry took ground fire and attacked a group of huts supported by artillery, killing four VC.

At the same time Company D, 1/501st was hit by fire and responded with unit weapons, artillery and air support, resulting in two PAVN killed for one U.S.

At 16:10 Troop B, 2/17th Cavalry destroyed an 82mm mortar, during this time they took ground fire and called in an airstrike killing two PAVN.

[1]: 17 On 21 June activity increased with Troop B, 2/17th Cavalry making numerous sightings and contacts, killing five VC.

On 23 June Company C, 1/502nd lost one killed in a friendly fire incident and found one PAVN grave.

On 27 June air assaults were conducted into the site of the B-52 strikes resulting in two PAVN killed and one VC grave located.

On 29 June at 08:35 Company D, 502nd was hit by small arms, machine gun and RPG fire, the unit supported by helicopter gunships engaged killing four PAVN.

[1]: 19–20 On 1 July a unit of the Brigade found two weapons and munitions caches totaling 9.5 tons 28 miles (45 km) southwest of Tam Kỳ.

On 6 July between 04:40 and 06:49 two B-52 strikes took place, troops were air-assaulted in for bomb damage assessment and six VC and one U.S. soldier were killed in search operations.

At 12:10 a Brigade unit was ambushed by an estimated PAVN/VC company 14 miles (23 km) southwest of Tam Kỳ, the troops fought back with small arms and automatic weapons fire and were then supported by a USAF AC-47 Spooky gunship, tactical air strikes and artillery.

At 10:30 a Troop B, 2/17th Cavalry LOH was shot down and aero-rifle platoon landed to support its recovery found four individual weapons in the area.

At 14:03 a Marine F-4C suffered a mechanical failure, the crew ejected and were rescued by Troop B, 2/17th Cavalry.

On 28 July Brigade reconnaissance teams killed two PAVN/VC outside bunkers and captured two female VC.

At 13:10 a Troop B, 2/17th Cavalry LOH received ground fire and crash-landed, the aero-rifle platoon was inserted to secure the area and found two weapons.

Also this day plans were issued to begin the withdrawal of the 1st Brigade by air to Camp Eagle.