Cloak & daggerCoup Plots, Poison, Hacking, Sabotage: What Is the GRU’s Unit 29155?

By Mike Eckel

Published 26 April 2021

In 2012, the salaries of service members of three Russian intelligence units within the GRU were increased significantly. One of these units, Unit 29155, has grabbed outsized attention, having been linked by 2018 to an alleged coup plot in Montenegro and the near-fatal poisonings of a former Russian military intelligence officer in England and an arms dealer in Bulgaria. Now, Czech government allegations that the unit’s members were behind a 2014 explosion at a Czech ammunition depot. “These are the guys you send in because you want to break stuff,” said an expert on Russian security services.

On March 20, 2012, a decree signed by Defense Minister Anatoly Serdyukov was published by the Russian government. The decree set out a system of payments to military servicemen “for special achievements in the service.”

Section 4 of the order, which was first highlighted by RFE/RL’s Russian Service, stated that “servicemen of military units 99450, 74455, and the structural unit of military unit 29155 are paid a monthly supplement.”

At the time, little attention was paid to the decree: Little was known about the units, which fell under the umbrella of the feared-and-respected military intelligence agency known as the GRU.

In the years that followed, however, these units burst into the public eye appearing in indictments, sanctions announcements, and political statements from Washington D.C. to the Black Sea.

Unit 29155 in particular has grabbed outsized attention, having been linked by 2018 to an alleged coup plot in Montenegro and the near-fatal poisonings of a former Russian military intelligence officer in England and an arms dealer in Bulgaria.

Now, Czech government allegations that the unit’s members were behind a 2014 explosion at a Czech ammunition depot have blown up relations between Prague and Moscow, with both sides expelling diplomats and exchanging angry rhetoric.

“These are the guys you send in because you want to break stuff,” said Mark Galeotti, an expert on Russian security services.

Here’s a look at the Russian military intelligence unit that has captured the attention of Western intelligence.

Evolution of an Intelligence Unit
The GRU — whose official name is the Main Directorate of the General Staff of the Armed Forces of the Russian Federation — is not a new entity. It’s been around for decades, operating first in parallel with the KGB and then, after the Soviet breakup, with the KGB successor agencies: the Federal Security Service and the Foreign Intelligence Service.

In addition to providing more traditional tactical battlefield intelligence for Russian commanders, the agency also oversees several special forces units known as spetsnaz, some of which are charged with sabotage-type operations. It engages in electronic surveillance and recruitment of foreign spies, and, more noteworthy, cyberespionage and offensive cyberoperations — hacking into adversaries’ computers, and possibly even inserting destructive code into computer systems.