Which companies of the 2nd Battalion, 5th Marines took part in each operation, 1966–1971. Read from the battalion command chronologies rather than from secondary accounts.
How to read it. Yes means the company is named in the record as taking part. Part of the company means a platoon or detachment only. Attached out means the company took part under another battalion. No means the record places it elsewhere. Not identified means the record is silent — it is not evidence that the company was absent.
Each operation links to its summary. For the detail of what a company did, see the 2/5 Companies Participated field in that operation’s document.
| 2nd BATTALION, 5th MARINES — WHICH COMPANIES TOOK PART IN EACH OPERATION | ||||||
|---|---|---|---|---|---|---|
| Read from the 2/5 command chronologies. “Not identified” means the record is silent, not that the company was absent. | ||||||
| Operation | Dates | Company E | Company F | Company G | Company H | H&S Company |
| Operation Utah | 4–7 March 1966 | No | No | No | No | No |
| Operation Wyoming | 260730H April 1966 – 011922H May 1966 | Yes | Yes | Not identified | No | Yes |
| Operation Apache | 090600H – 122000H June 1966. 2/5 Operation Order 305-66 was issued on 1 June 1966; the initial briefing was held on 5 June and a second on 7 June | Yes | Yes | Not identified | No | Yes |
| Operation Kansas | 17–22 June 1966 | Yes | Not identified | Not identified | No | Not identified |
| Operation Hastings (Lam Son 289) | 15 July – 3 August 1966 | No | No | No | No | No |
| Operation Deckhouse II | 16–18 July 1966 | No | No | No | No | No |
| Operation Prairie (Prairie I) | 3 August 1966 – 31 January 1967 | No | Yes | Yes | Yes | Yes |
| Operation Colorado (Lien Ket 52) | 6–22 Aug 1966 | Yes | Not identified | Yes | Yes | Not identified |
| Operation Napa (Lien Ket 56) | D-Day 5 September 1966; units moved to Tam Ky 4 September; terminated 151200H September 1966 | Not identified | Not identified | Yes | Part of the company | Not identified |
| Operation El Paso | D-Day 5 September 1966. Units moved to Tam Ky on 4 September; the operation terminated at 151200H September 1966 | Not identified | Not identified | Yes | Part of the company | Not identified |
| Operation Monterey | 290630H – 301150H September 1966 | No | No | No | No | No |
| Operation Monterey II | Listed on Wikipedia as 30 September – 2 October 1966. No record of the operation being carried out was found in the 5th Marines, 1/5, 2/5 or 3/5 chronologies for October 1966 | No | No | No | No | No |
| Operation Dover | 18–30 October 1966 | No | No | No | No | No |
| Operation Mississippi | 291000H November – 071730H December 1966 | No | Yes | Yes | Yes | Yes |
| Operation Sutter | 30 November – 6 December 1966 | No | No | No | No | No |
| Operation Lincoln | 050530H – 091200H January 1967 | Not identified | Yes | Yes | No | Not identified |
| Operation Tuscaloosa | 24–28 Jan 1967 | Part of the company | Yes | Part of the company | Yes | Not identified |
| Operation Independence | 010000H – 090900H February 1967 | Yes | Yes | Not identified | Yes | Not identified |
| Operation Prairie II | 1 February – 18 March 1967 | No | No | No | No | No |
| Operation Stone | 11–22 February 1967 | No | No | Yes – attached out | No | No |
| Operation Lanoke | D-Day 26 February 1967, H-Hour 0700 | Not identified | Not identified | Yes | Yes | Yes |
| Operation Prairie III | 19 March – 19 April 1967 | No | No | No | No | No |
| Operation New Castle | 220630H – 25 March 1967 | Yes | Yes | Not identified | Not identified | Not identified |
| Operation Dixie | 071000H – 101600H April 1967 | Part of the company | Yes | Yes | No | Yes |
| Operation Prairie IV | 20 April – 17 May 1967 | No | No | No | No | No |
| Operation Beaver Cage | 28 April – 12 May 1967 | No | No | No | No | No |
| Operation Union I | Began 21 April 1967 | Yes – attached out | No | No | No | No |
| Operation Union II | 26 May – 5 June 1967 | Yes | Yes – attached out | Not identified | No | Yes |
| Operation Arizona | 140800H – 181915H June 1967 | Yes | Yes – attached out | Not identified | Yes | Yes |
| Operation Calhoun | 250600H – 291900H June 1967 | Not identified | Yes | Yes | No | Not identified |
| Operation Pike | Early August 1967 | No | No | No | No | No |
| Operation Swift (Lam Son 289-B) | 4–15 September 1967 | Not identified | Not identified | Not identified | Yes – attached out | Not identified |
| Operation Shelbyville | 26–29 September 1967 | Not identified | Not identified | Not identified | Yes | Not identified |
| Operation Golden Fleece | 30 September 1967 is the only date on which the 2/5 Command Chronology records the battalion taking part. Golden Fleece was not a single operation: III MAF used the name repeatedly from 1965 onward for rice-harvest protection operations across I Corps | Yes | Not identified | Yes | Not identified | Not identified |
| Operation Essex | 6–17 Nov 1967 | Yes | Yes | Yes | Yes | Not identified |
| Operation Auburn | 28 December 1967 – 3 January 1968 | Yes | Not identified | Yes | No | Yes |
| Operation Hue City (Battle of Hue) | 1 Feb – 2 Mar 1968 | Yes | Yes | Yes | Yes | Yes |
| Operation Houston | 26 Feb – 12 Sep 1968 | Yes | Yes | Yes | Yes | Not identified |
| Operation Baxter Garden (Lam Son) | 19–26 Apr 1968 | Yes | Not identified | Not identified | Yes | Yes |
| Operation Allen Brook | 4 May – 24 August 1968 | No | No | No | No | No |
| Operation Mameluke Thrust | 19 May – 23 Oct 1968 | Yes | Yes | Yes | Yes | Not identified |
| Operation Sussex Bay | 29 August – 9 September 1968 | Not identified | Not identified | Not identified | Yes | Not identified |
| Operation Maui Peak | 060600H – 191800H October 1968 | Yes | Not identified | Yes | No | Yes |
| Operation Henderson Hill | 23 Oct – 6 Dec 1968 | Yes | Yes | Yes | Yes | Not identified |
| Operation Meade River | 20 Nov – 9 Dec 1968 | Yes | Yes | Yes | Yes | Not identified |
| Operation Taylor Common | 6 Dec 1968 – 8 Mar 1969 | Yes | Yes | Yes | Yes | Not identified |
| Operation Oklahoma Hills | 31 March – 29 May 1969 | No | No | No | No | No |
| Operation Muskogee Meadow | 6–20 Apr 1969 | Yes | Yes | Yes | Yes | Not identified |
| Operation Pipestone Canyon | 26 May – 7 November 1969 | No | No | No | No | No |
| Operation Forsyth Grove | 010800H – 032400H July 1969 | Yes | Yes | Yes | Not identified | Not identified |
| Operation Durham Peak | 20 Jul – 13 Aug 1969 | Not identified | Not identified | Not identified | Yes – attached out | Not identified |
| Operation Pickens Forest | 16 July – 24 August 1970 | No | No | No | No | No |
| Operation Barren Green | 24–27 July 1970. A preliminary harvest-security effort was made on 15–16 July. 2/5 companies took part 24–25 July | Not identified | Yes | Yes | No | Yes |
| Operation Lyon Valley | 16–24 August 1970 | Not identified | Yes | Not identified | Yes | Yes |
| Operation Imperial Lake | 1 Sep 1970 – 7 May 1971 | Not identified | Not identified | Not identified | Yes | Not identified |
| Operation Catawba Falls | 18 September – noon 21 September 1970 | No | No | No | No | No |
| Operation Tolare I | 2–15 October 1970 | No | No | Part of the company | No | No |
| Operation Noble Canyon | 23 October – 3 November 1970 | No | No | No | No | No |
| Operation Tolare II | 27 October – 30 November 1970 | No | No | Part of the company | No | No |
Back to the list of 2/5 military operations, 1966–1971
The battalion had no Weapons Company in this period: it was H&S Company plus Companies E, F, G and H. The weapons platoons sat inside the rifle companies and the 81mm Mortar Platoon in H&S.