Nightmares from when i was serving in the army....?

I recently started having dreams about my time i spent in the soviet armed forces. The nightmare is reoccurring about a KGB organized operation in the united kingdom. I was with my team whom i had been training with in Moscow back in the old country for 5 years. My team was from the 216th and we detached to find a defector threatening of the Kremlin's war plans. It was important we find and bring back the defector for, questioning. I was only 29 at the time and we were staying in Birmingham when we heard of the defector to be meeting with the members of the SIS on disclosing info on the plans. KGB officers gave us the location and time of when this would happen, dressed in civilian clothing we entered the shop 30 minutes before the met was organized. 3 or us were in the shop, and the other 3 were in the alley across the street. When the suspected defector arrived with his escorts. Soon another vehicle arrived with 2 men in suits suspected if being MI6. We had the go from Moscow and me and my comrades exited the shop single file with our PM's drawn while our comrades across the streets had their 74s drawn and advanced across the street. Encircled the men showed their hands while we moved them toward the escort car. The MI6 car had dark windows and we did not see the 2 SAS bodyguards in the car. They exited a bullets starting flying, a bullet hit my best friend and squad mate right in the neck. I emptied my clip into one guard while my comrade in cover behind a car shot the other with a 74 and he hit the ground fast, but not before he could shoot another one of my comrades between the eyes . The dream always ends when the brain matter from my dear friend hits my glasses and my face. I've had the same dream for 3 months and it's not the thing i want to see a head doctor for. Weakness isn't something Spetsnaz are known for. My grandson recommended i ask on this site. Any help is appreciated.