Attached Units KIA
5
91st ENGINEER COMPANY, 27th Engineer BattalionWe were attached to you at Blackhorse in 67 to early 68 under the 27th combat engineers. Our small company was the 591st LE combat. We lost 5 of our people while under your unit. We were transferred to Phu Bai/Hue in early 68 to work with the 101st. We left our 5 Rome Plows at Blackhorse with operators when we moved.
Our KIA while there is as follows-These were 591st people
Jimmie Ray Blissett Jan16, 1968
Harvey Milford Mosher JR Nov 4, 1967
Robert Lee Bellamy Mar 22, 1968
John Grady Marshall March 30, 1968
Rodger Dean Eckstein Oct 2, 1967
409TH ARMY SECURITY AGENCY DETACHMENT
On 8 April 1966, the Army Security Agency activated
the 409th  Army Security Agency
Detachment at Fort George G Meade Maryland. The 80 man Detachment was designed
specifically to support the 11th Armored Calvary Regiment.
On 18 August 1966, the 409thASA
Detachment (known in Vietnam as the 409th Radio Research Detachment) was
deployed with the Regiment to Vietnam.
The 409th RRD played a very
important role in supporting the Regiment by providing communications intelligence, which
targeted the elusive enemy. This was accomplished by manual morse and voice
interception,along with radio direction finding.
Small teams from the 409th
RRD deployed with elements of the Regiment in direct support of combat operations while
others maintained collection sites at isolated fire support bases.  The Detachment relayed its information directly to
the local commander and provided him with reports from other Radio Research elements,
which could include the results of  airborne
radio direction finding. In addition a team of specialists provided advice and assistance
on communications security matters to the Regiment.
Although small in size, the 409th
RRD was quickly recognized  for providing
reliable information on a timely basis. For its efforts , the 409th RRD
received a Valorous Unit Award, 4 Meritorious Unit Commendations, 4 Republic Of Vietnam
Crosses Of Gallantry.
     
The 409th RRD suffered two
combat losses
    1LT JOHN F 
Cochrane   24
OCT 1966
    SP5 HARRY J 
Colon        
21 JUN 1969
541st 
Military Intelligence Detachment
Beginning in March 1966, the 541st Military Intelligence 
Detachment was 
activated along with the rest of the Blackhorse Regiment at Fort Meade, 
Maryland.   During our deployment in Vietnam, the 541st MID suffered two 
combat losses:
                     PFC. 
WALLACE JAMES MALONE   
November 21, 1966
On 21 November, while on a convoy movement to the new Blackhorse base camp, 
Pfc. Wallace J. Malone, 541st Detachment, and five other troopers were 
killed in an ambush on Route 1, midway between Bien Hoa and Xuan Loc.
                    CAPT. 
GREGORY KENT 
WHITEHOUSE   March 6, 1968
On 6 March 1968, medical personnel from the Blackhorse Base Camp, protected 
by ACAV's from one of the troops, were to conduct a medical clinic in a 
village a few miles from the base camp.   Capt. Whitehouse was on one of the 
ACAV's, going along as an intelligence observer.   The convoy was hit by a 
command detonated mine and an ambush in which Capt. Whitehouse and one other 
trooper were killed.