The 673rd Separate Anti-Aircraft Missile Squadron is identified as a subordinate air-defense element of the 144th Guards Motor Rifle Division.
Hierarchy provided: Security Council of Russia > Ministry of Defense > General Staff > Moscow Military District > 20th Combined Arms Army > 144th Guards Motor Rifle Division > 673rd Separate Anti-Aircraft Missile Squadron.
The location record associates the squadron with the 9K37 Buk surface-to-air missile system.
The unit is linked to Smolensk. No direct placemarks are provided in the supplied material.