We were a small detachment - 5-6 handlers, a vet, and two E6 NCO's. I'm going by memory, but I think the MP unit at Camp Eagle, those who provided police duty and gate security, was the 504th. There may be more than one "Camp Eagle", but the camp I served at was on Highway 1 west of Phu Bai across the highway from the military airport.
Camp Eagle was primarily a signal base at the time, but contained units from the 1st/4th Cav providing gun ship support for the ARVN infantry involved in the Easter Offensive of 1972. Our main security concerns for my 212th detachment at Camp Eagle were the antenna field outside the Bern and bunker line used by the signal personnel, and the airport which held air mobile gun ships and personnel.
When the North Vietnam army came through the DMZ at the end of March of 1972, and Quan Tri and Camp Carroll fell to the PAVN North Vietnam Armored Infantry Camp Eagle got pretty harry. We were attacked - mortars and rockets - 3-4 nights per week. We had no casualties - thank God. In July '72 the PAVN over ran the ammo dump west of Camp Eagle and zapped two ammo cache cambers with some ARVN casualties. That was the best fireworks display I've ever seen - the dump blew for three days and bellowed smoked for 10. John Meier, 212th MP Company (Sentry Dog), USARPAC