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HEADQUARTERS
3d Antitank Battalion  (Rein)
3d Marine Division  (Rein), FMF
c/o FPO San Francisco, California 9601
                                                                                                                                              3/FF/eh
                                                                                                                                              3100
                                                                                                                                              10 Jan. 1966

From:          Commanding Officer
To:              Commanding General,  3d Marine Division  (Rein), FMF

Subj:           Command Chronology, December 1965, submission of

Ref:            (a)   MCO 5750.2
                      (b)   DivO 5750.1

Encl:           (1)   Journals
                      (2)   SITREPS
                      (3)   Company Operational Summaries,  Period of 1-31 December 1965.
                      (4)   Logistical Data

1.          In compliance with references  (a)  and  (b)  the Command Chronology
and enclosures  (1)  through  (4)  are submitted.


                                                                                                              (Signature)
                                                                                                              BRUCE A. HEFLIN


















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                                                                                                                                                      3/EF/eh
                                                                                                                                                      10 Jan66

PART I

1.          Reporting Unit - 3d Antitank Battalion  (Rein)

2.          Period Covered - 1-31 December 1965

3.          Date of Submission - 10 January 1966

4.          Commanding Officer - 1-31 December 1965
                                                                Lieutenant Colonel BRUCE A. HEFLIN

5.          Command Post - Republic of South Vietnam,  (AT987711) - Map SVN
                                                   Series L701, Sheet No. 6659 III andd 6658 IV.
























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                                                                                                                                                      3/FF/eh
                                                                                                                                                      10 Jan66

PART II

1.          Operation Data, including attachments.

          a.     Designation/Locations

                    (1)  Headquarters and Service Co.  (-)  (Command Group)  (DaNang TAOR)

                              (a)   "A" Co.  (-)  (Rein)                                                                      (DaNang TAOR)
                                        2nd Platoon, Co. "A" 1st AT Bn.                                        (Hue Phu Bai TAOR)
                              (b)   "B" Co. (-)  (Rein)                                                                       (Chu Lai TAOR)
                              (c)   "C" Co.  (-)  (Rein)                                                                      (DaNang TAOR)
                              (d)   "C" Co.  (-)  (Rein)  1st AT Bn.                                          (Chu Lai TAOR)

          b.     Period covered by report:  1-31 Dec65.

          c.     Name/Rank of Commanding Officer and Staff, or principle
                    subordinates, including T/O billet assignments.

BATTALION HEADQUARTERS

Commanding Officer                                                                                  LtCol.  Bruce A. HEFLIN
Executive Officer                                                                                          Maj. Orville R. EDMONDSON
S-1/Adj                                                                                                                2ndLt. Gunther DOHSE
S-2                                                                                                                         1-7 Dec65
                                                                                                                              Capt. Vincent A. VERNAY
                                                                                                                               8-30 Dec65
                                                                                                                              Maj. Orville R. EDMONDSON
                                                                                                                              31 Dec65
                                                                                                                              Capt. Fritz FIRING
S-3                                                                                                                        1-7 Dec65
                                                                                                                              Capt. Vincent A. VERNAY
                                                                                                                              8-30 Dec65
                                                                                                                              Maj. Orville R. EDMONDSON
                                                                                                                            31 Dec65
                                                                                                                              Capt. Fritz FIRING
S-3A                                                                                                                   Unassigned
S-4                                                                                                                        Capt. Stanley R. STEWART
Liaison Officer                                                                                             Unassigned
Supply Officer                                                                                              1stLt. Avelino ANDAZOLA
Motor Transport Officer                                                                        1stLt. Daniel L. TAYLOR
Ordnance/Maintenance                                                                          1stLt. Brian M. MATHEWS
Communications Officer                                                                         MSgt. Joseph S. KRAJEWSKI
Medical Officer                                                                                            Unassigned

Headquarters and Service Company  (-)

Commandant                                                                                                    1-8 Dec65
                                                                                                                                  1stLt. D. B. HOUSE
                                                                                                                                  9-31 Dec65
                                                                                                                                  1stLt. J. T. MATHEWS

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3/FF/eh
10 Jan66

Company "A"  (-)  (Rein)

Commanding Officer                                                                                   Capt. K. E. SHARFF
Executive Officer                                                                                           Unassigned
1st Platoon Commander                                                                            2ndLt. P. F. MC ALEER
1st Platoon, Co. "A" 1st AT Bn.                                                            2ndLt. D. C. RUMSEY III
2nd Platoon, Co.  "A" 1st AT Bn.                                                       1stLt. D. J. NOONAN
  (Note:  1stLt R. H. Jaroch was marked out as 1st Platoon Cmdr. and replaced by Rumsey)


Company "B" (-)  (Rein)

Commanding Officer                                                                                   1stLt. M. H. CHANG
Executive Officer                                                                                           Unassigned
1st Platoon Commander                                                                           1-8 Dec65
                                                                                                                                  1stLt. J. T. MATHEWS
                                                                                                                                  9-31 Dec65
                                                                                                                                  SSgt. S. D. STEWART JR.
2nd Platoon Commander                                                                          1stLt. W. J. MAHER JR.

Company "C"  (Rein)                                                                                

Commanding Officer                                                                                  1stLt. A. G. ANDERSON II
Executive Officer                                                                                          Unassigned
1st Platoon Commander                                                                           SSgt. R. R. ABRAMOWICZ
2nd Platoon Commander                                                                          1stLt. M. M. WOOD
3d Platoon Commander                                                                            Sgt. L. D. WERRE
3d Platoon Commander                                                                            1stLt. J. J. MC COY

Company "C"  (Rein)  1st AT Bn.

Commanding Officer                                                                                   Capt. W. P. SNYDER
Executive Officer                                                                                           Unassigned
1st Platoon Commander                                                                            1stLt. H. T. SCHMIT
2nd Platoon Commander                                                                           1stLt. H. J. CONNOLY
3d Platoon Commander                                                                                SSgt. E. DAVIS

          d.     Average Monthly Strength during the period.

                    (1)  3d Antitank Battalion  (-) (Rein)    Officers-19          Enlisted-450

                              (a)   Headquarters and Service Company     8                              132
                              (b)   Company "A"                                                      3                                68
                              (c)   Company "B"                                                      2                                67
                              (d)   Company "C"                                                      3                                96
                              (e)   Company "C",  1st AT Bn.                         3                                87





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                                                                                                                                                      3/FF/eh
                                                                                                                                                      10 Jan66

2.   Sequential listing of significant events.

          a.   Personnel.  During the month there were four promotions to
First Lieutenant, one appointment to Second Lieutenant, one promotion
to Gunnery Sergeant, five selection for Staff Sergeant, 22 promotions
to Sergeant, two recommendations for meritorious promotion to Sergeant,
one meritorious promotion to Corporal, one meritorious promotion to
Lance Corporal and one promotion to Private First Class.   One man was
awarded the Bronze Star, two men awarded a Meritorious Mast and one
Officer recommended for a Navy Commendation Medal.   The Battalion sent
55 men on R&R.   Three men were medically evacuated for non-battle
reasons, one man was granted Humanitarian Leave to CONUS, three men
went on emergency leave and five men were awarded Article 15 punishment.
One man died of a self-inflicted gun shot head wound on 25 Dec65 as a
result of an accidental discharge of a .38 caliber pistol.   The
incident is presently under investigation.   During the month 38 men
were transferred and 30 replacements were joined.   One Officer joined
and was assigned as the S-3/S-2.

          b.   Administration.   All companies were on Company Administration
during this period.   One company started the addressograph PAS system,
bringing the total to two with three companies still on the old system.

          c.   Intelligence.   Information concerning road and bridge conditions
was received from III MAF photographic intelligence reports, 3d Marine
Division ISUM's and reports from the gun companies.   A Vietnamese
interpreter reported in from Headquarters, 3d Marine Division and joined
this organization for duty.   Propaganda pamphlets were found outside
the Battalion C. P. area in YEN BAC  (1)  (AT985701) by a squad sized
local security patrol.   The general theme of the propaganda was "refuse
to fight for imperialists that are making money from you blood".   Also
found were safe conduct passes for ARVN soldiers to go over to the
VC's.   Intelligence information received by this Headquarters of interest
to the gun companies was passed to them.

          d.   Training.   During the reporting period numerous classes were
conducted throughout the Battalion by H&S Company and the seperate gun
companies.   Nine men from H&S Company and three men from Company "C"
3d AT Battalion attended the 12th Marine's .50 Cal. machine gun school.
This school/FIREX employed the .50 Cal. machine gun in the antiaircraft
role, and firing was done at aerial drones.   School was accomplished on
the employment of the Claymore mine,  and the operation of the Seismic
Intrusion Device.   The majority of the training in the gun companies
was "on the job training".   The major subjects of this OJT were:  Map
readin, Communication  (radio procedures), preventive maintenance,
driver's training  (both tracked and wheeled), 106mm Recoilless Rifles
and .50 Cal. spotting rifles with the M-60, M1919A4 and M-14 familiar-
ization firing.   Special classes were conducted on Interior Guard, Land
Mine Warfare and VC Booby Traps.   Personnel, equipment and vehicular
inspections were conducted.   A number of FIREX's were conducted using
both the HEP-T AND HEAT 106mm rounds as well as the .50 Cal. spotting
rifle.

3


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10 Jan66

          e.     Operations.   On 1 December 1965 the Battalion was deployed
as follows:

                    (1)   3d Antitank Battalion  (-)  (Rein)  is in general support of
the 3d Marine Division.

                              (a)   H&S Co.  (-)  (Rein) located DaNang TAOR  (AT987711).

                              (b)   Company "A"  (-)  (Rein)    in direct support of the 3d
                                                                                             Marine Regiment.
                                        1st Platoon Co. "A"          in direct support of the 1st