We are building timelines for the Troop's service in Vietnam. If you have award citations, SITREP's, AAR's or other documents, they can provide dates that can add to the timelines.  John Moore, 1st Plt Ldr & Trp XO from Aug 68 to Aug 69, is our volunteer coordinator for the Counteroffensive Phase IV timeline. 
     Note 1: Entries that include an exact time or grid coordinates have been extracted from offical documents.  If no time is provided it is a recollection from a unit member.
     Note 2 Email us and provide additions or corrections for this timeline.

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Apr 7
- 3/4 Cavalry OPCON to 1st Brigade, 25th Infantry Division for operation TOAN THANG.
Apr 8
- All 25th Infantry Division resources and assets were committed to operation TOAN THANG.  See Operational Information Report here.
Apr 12
- PFC Everett and PFC McVay KIA.
Late Apr - Intelligence sources indicate impending enemy attacks into the capital region.

May 1
- PFC Arthur C. Tijerina KIA.
May 2
- Enemy main force units of the 5th and 9th VC/NVA and the 7th NVA Divisions committed themselves to their approach marches into the capital region.
May 4
-  A new wave of attacks hit 109 cities, towns and bases all across South Vietnam.  This was the start of the Viet Cong (VC) and the North Vietnamese Army’s (NVA) “2nd Phase Offensive".
May 5
- Enemy units moving towards Saigon.
May 8
- A Troop road marches in to Saigon to block enemy approaches to city.  A Troop establishes cordon of the Cholon section of the city.  Troop maintains cordon for one week.  House to house searches take place during the week long cordon. Photos of troop appear in Time magazine (See May 17).
May 9
- At 0100 hours, 30 rounds of mixed 122mm and 107mm rockets struck the Cu Chi Base Camp. 7 US soldiers killed and 48 wounded.
May 13
- Enemy units which had moved towards SAIGON beginning on the 3rd of May were now exfiltrating the area in movements back to their sanctuary areas.
May 14
- Divisional units were now employed to pursue the fleeing enemy.
May 15
- A Troop sweeps for the enemy in the northern HO BO WOODS and intercepts a large enemy unit moving north at XT560308. A Trp, commanded by CPT William 0. Coomer, spotted nine VC moving in the underbrush of an area cleared by Rome plows. 1LT Roger A. See and SP4 Roy A. Harbaugh led searches of tunnels that produced three VC detainees. PFC Lyall H. Chester of A Trp, during a search of a tunnel found approximately 50 pounds of medical supplies. In an all day battle, A Troop reinforced by the Squadron's C Troop and supported by gunships, artillery and air strikes accounted for 82 VC KIA and captured three prisoners. The PS's identified their unit as the 7th Battalion, SR-1, local force and reported that the battalion had been in constant contact for ten days with US and ARVN forces and had lost 400 of its 500 personnel either killed, wounded or missing. The surviving enemy pulls back into WAR ZONE C in northern TAY NINH Province. SP5 Taylor and PFC Rugar KIA.  See Tropic Lightning News article.
May 16
- A Troop's M88 VTR hit by RPG fire.
May 17
- Photograph of A Troop during the Cordon of Cholon appears on page 27 of TIME Magazine's May 17th 1968 issue.  See the photograph here.
May 22
- 0840 hrs Troop A and Troop B search in an area a short distance to the northeast of the 1st Bn 5th Mech's prior contact at grid XT574278 came into contact with an unknown size enemy force. In a running battle which lasts all day, the cavalrymen, supported by helicopter gunships, artillery and air strikes, accounted for 29 VC dead.
May 26
- 2250 hrs 14 kilometers west of SAIGON at grid XS671925  the 4th Bn, 23rd Mech was located in a night defensive position. The battalion's night position came under mortar fire which was intermittent until 0330 hours when the position came under a massive ground attack. The 4th Bn 23rd Mech held off the human wave assaults with the aid of armed helicopters, artillery and air strikes.
May 27
- At dawn, the 4th Bn 23rd Mech was reinforced by A Troop and C Troop. The combined US force moved out of the NDP at first light and pursued the enemy which was attempting to break contact. The fire-fights in the general vicinity continued until 1600 hours. The enemy body count within the NDP and the surrounding area was 243 VC KIA as compared to 6 US fatalities. In addition, three personnel were taken who identified their mauled unit as the 2nd Battalion, 273rd VC Regiment. Also captured were 28 AK-47 rifles, 11 RPG-2 rocket launchers, 16 machine guns, six 60mm mortars, 49 60mm mortar rounds, 58 hand grenades, 142 RPG-2 rounds and 22,500 rounds of small arms ammunition. See photo of captured weapons. PFC Sauls KIA.  See Tropic Lightning News article.

June 3
- SP4 Hilton dies from wounds received May 27th.
 

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