The need for remote sensor capabilities was first recognized in September 1966 when then-Secretary of Defense Robert McNamara directed the establishment of the Defense Communications Planning Group (DCPG) to develop a system for monitoring movements of men and material from North to South Vietnam. During October of that year, the DCPG tasked the Navy to develop a remote sensor system (RSS) for deployment in Vietnam.
Thirteen months after initial tasking, the first operational sensors were deployed. Information derived from the sensors was used by the Air Force to direct strike aircraft onto active enemy targets. With mounting enemy pressure on the Marines at Khe Sanh, part of the RSS was redirected to support the Marines and was utilized to direct supporting arms. Due to tremendous success at Khe Sanh, the use of the RSS was vastly expanded by 1968.
As a result of lessons learned in remote sensor employment, the Marine Corps created the sensor control and management platoons (SCAMPs) under the command of the division G–2 (intelligence). The SCAMPs’ mission was to provide the capability for remote sensor employment in amphibious operations, to support contingency operations, and to conduct sensor surveillance employment training and testing as required.
Nearly 40 years later the original mission statement remains the same, although the name and unit have changed; they are now called ground sensor platoons (GSPs) and belong to the intelligence battalions of I, II, and III Marine Expeditionary Forces (I, II, and III MEFs) and the Marine Forces Reserve. I and II MEFs each have three sensor employment squads (SESs) with two sensor employment teams (SETs) that are comprised of four to five operators and typically support a Marine expeditionary unit. III MEF operates with only two squads; the “plus-up plan” will add an additional SES each to I and II MEFs.
Marines within the GSP are infantrymen and radio operators who attend the 7-week Sensor Surveillance Operators Course (SSOC) at the Navy/Marine Corps Intelligence Training Center (NMCITC) in Damneck, VA. Upon completion of SSOC, the Marines receive a secondary 8621 ground sensor operator military occupational specialty.
The Marines are given instruction in basic intelligence, mapping, equipment, planning, monitoring, reporting, and emplacement techniques. This training provides the ground sensor operator with the crucial skills he needs to employ remote sensors in combat operations.
Since 1969, time and technological advances have greatly enhanced the capabilities for using unattended remote devices to gather and report invaluable information. The capability that the GSPs bring to the fight today is the tactical remote sensor system (TRSS). The TRSS is a suite of unattended ground sensors, retransmission devices, and sensor monitoring equipment that provides all-weather monitoring of activity within and near a given objective area.
TRSS is capable of detecting the presence and movement of vehicles and personnel and providing near-realtime monitoring of sensor activity within radio line of sight and/or over the horizon. The TRSS provides extended range detection and surveillance capability without the requirement to maintain a physical presence in the target area. In effect, sensors can be employed in almost any tactical situation. In an early warning application, the sensors are placed along avenues of approach to provide early warning of enemy movement toward friendly positions.
In this role sensors would be implanted as far forward of friendly positions as possible to provide maximum reaction time. Sensors in the target indication application are implanted along key enemy lines of communications or named areas of interests, and sensor activity can be used to initiate targeting actions. The sensors provide an excellent means of facilitating the targeting process in conjunction with the cueing of other target indication sources.
The means and methods by which sensor operators plan and emplace sensors are driven by the information needed and the capability of the equipment. TRSS sensors are comprised of seismic, acoustic, magnetic, and infrared sensors. These sensors are capable of classifying targets, such as personnel, wheeled, or tracked vehicles, while also providing the direction of movement.
The TRSS retransmission device provides the capability of long-range sensor monitoring. The current retransmission device is also capable of storing sensor activity that can later be retrieved by the operator. The sensors and retransmission devices have sufficient power sources to operate continuously for 30 days.
The monitoring equipment that is used by sensor operators to compile, process, and report sensor-derived information is designed to be lightweight and mobile and to support fast-moving amphibious and expeditionary operations. The TRSS project office at the Marine Corps Systems Command continues to add to the capabilities based on the intelligence community’s and sensor operators’ needs and desires.
The latest capability provides a day and night imaging sensor, and since the beginning of calendar year 2008, satellite communications capability and an advanced acoustic sensor have provided more detailed target classification capability and target location information. Although the role of sensors is primarily surveillance, early warning, and target indication, the proper use and employment is only limited to the imagination of commanders, intelligence officers, and sensor surveillance operators.
Currently the GSPs are continually deployed in support of combat and contingency operations worldwide and are experiencing unprecedented success. This success is exemplified by commanders who are aware of their capabilities and therefore are making the proper utilization of GSP a priority. Typically, the shortcomings of the GSP are not in the form of equipment shortage or personnel but are seen in the lack of the units’ awareness of their capabilities.
SETs have been utilized in a wide variety of innovative conceptual applications. SETs have been supporting company-level infantry operations, early warning missions, sniper employment assistance and, even more, have greatly assisted in the detection of the employment of improvised explosive devices. Currently, to aid in the education of the capabilities and employment of the GSP, the SSOC team at the NMCITC is providing instruction to all levels of intelligence training for both officer and enlisted Marines.
The GSP equipment and Marines of today bring to the fight a wealth of knowledge, technology, and desire to contribute to the success of every mission they support. Those Marines who have used remote sensors can attest to the unparalleled capability that the GSP can provide to aid in the success in winning the fight.




The Marine Corps Association & Foundation remembers the past and honors the present. Review the first one hundred years of MCA via historical photos and film clips of the organization that serves the men and women of the Marine Corps. Click 



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I first met Gen Clifton Bledsoe Cates, our 19th Commandant, at a reception marking his promotion to brigadier general held in the ballroom of Harry Lee Hall at Quantico in the spring of 1943. After the receiving line broke up, Been Cates stood by the fireplace mantel, uniformed in summer service with the red and green fouragerre of the Gth Marines on his shoulder and a long cigarette holder in his hand. 
Comments
Scamp
I served with SCAMP in Vietnam
In 1969 -training was 3 weeks in Arizona.
Frank Gavaldon
SCAMP
I served with you, Frank. There's a SCAMP (old and new) site on FB, with a lot of pics. You might find yourself staring at your own photo from 69-70
SCAMP
As a team leader to G-2 SCAMP in Viet Nam from early 70 thru early 71 i also went thru Electronic Warfare School at Fort Huachua Az, it was 3 1/2 weeks and at the time i did not get a secondary MOS for it and kept my 0311/8651 MOS.
Sgt G.O. Davis USMC
SCAMP 1971
I also trained at Ft Huachuca.SCAMP at Lejeune was deploying to cold weather,desert to test the equipment.Even gave classes to large groups of all ranks of Marines.
SCAMP days
Served with 2d SCAMP in Camp Lejeune NC in 74-75 ans 3d SCAMP on Okinawa 75-76. Good times.
GSP
Served with 3d GSP Okinawa, Japan 09-11. Lookin back: awesome times.
I've heard you guys during
I've heard you guys during that time had alot of engagements with enemy forces in your missions. Sounds crazy man.
SCAMP
3rd Mar Div SCAMP was deployed to Bien Hoa in October, 1972 attached to I Co.3/9. We deployed sensors on the north and east perimiters to protect the massive ammo and fuel dump. 1Lt Kahler, Gunny Lenetti, Sgt. Paollucci, Shedlock, Starkey, Mowry, Dyer, and a couple of other great guys whose names escape me were all there along with myself Kevin Macaluso.
Ground Surveillance
During my tour in Vietnam I was attached to 1/3 3rd Mar Div. In the last part of 1969 or the first part of 1970 I stepped on a mongoose while walking a trail near Cam LO. I was sent to Dong Ha for rabies shots at which time I was put into what I was told was the Marine Corps first class for Ground Surveillance school. We were introduced into the field of seismic intrusion detectors, (NOD) night observation detectors and Ground radar's to make the list short. My unit had returned to the bush so I packed some of these "TOYS" and returned to my Co. Never the less, I had a ball planting these along the DMZ. Then at night we monitor the headset until we got movement. Had kill zones set up so that was she wrote for those gooks.
Now my DD214 still has Ground Surveillance Equipment Operator listed and nobody seems to know the story of what this MOS evolved into. So I'm putting this out there for the first time ever.
If anyone can help me with this, please e-mail me at harleyinmt@yahoo.com.
Thank You
Norman Guevin
Army REMBASS
I'm a retired Soldier (Son of a retired Marine) who spent my carrer as a 'Ground Surveillance Systems Operator' until the army intel felt there was no more need for us "glorified Grunts". REMBASS was the equivalent to, I believe, SCAMP. Small 3-5 man teams would go out and emplace the systems, the monitor and report from a remote location. We had a special sense of comradery amongst our kind, and that is something I will remember for the rest of my life. Just glad to see that the Marines still recognize the need for a "human" to be out front! God bless you guys!
Also a 8621/2531
It was only a small group of us. I was with 1st SCAMP at Camp Pendleton '82-83. We went to Fort Huachuca for our training.
David Thomas
SCAMP UNIT
i SERVED WITH 3RD SCAMP IN OKI, JAPAN FROM 1978 TO 1980.
Gysgt Boswell, J.W. Ret.
Could it be?
Are you the same Cpl. Bos, John Wayne, I served with in 1980? DOB 4/18? If so, we were a team sent to Japan 3/80-7/80. Contact me at rphillips2017@gmail.com
TRSS systems development in the 1980s
As the Assistant Program Manager for Reconnaissance and Surveilance Systems at HQMC (Code INTM) and at MCB Quantico from 1985-1992, TRSS was my principal development program. I inherited the job from Capt Ruben "Chris" Gentry, with whom I had served as a Grunt 0311 in 2d Plt, Fox 2/3 in South Vietnam back in 1968. The TRSS was unique in that it was one of very few Marine Corps-only development programs in DoD. We had originally been part of the Army's REMBASS program to replace the old Vietnam-era Phase III SEAOPPS sensor system originally employed by the SCAMPs. When we found the Army cheating on field testing of REMBASS, then-Commandant Gen P. X. Kelley decided that the Marine Corps should move to the Marine Corps-only TRSS program. Having retired over 20 years ago, I'm glad to see that the Marine Corps has finally (almost) finished fielding this system to the FMF. Capt (later Maj) Bobby Mosley was my replacement as head of TRSS development after I retired in July 1992.
Maj Joe Burroughs (LDO) USMC (Ret)
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