GROM

Jednostka Wojskowa GROM
Official JW GROM emblem
Active	July 13, 1990 – present
Country	Poland
Allegiance	Polish Armed Forces
Branch	Polish Special Forces
Type	Special Forces
Role	Counter Terrorism, Direct Action, Unconventional Warfare
Size	650 personnel (2014)
Part of	Before October 1, 1999: Ministry of Interior October 1, 1999 – present: Polish Armed Forces
Garrison/HQ	Warsaw HQ, Gdańsk; Poland
Nickname(s)	The unseen & silent
Patron	Cichociemni
Motto(s)	Siła i Honor Tobie Ojczyzno! (Strength and Honor For you, Fatherland!)
Beret color	Grey
Engagements	Operation Uphold Democracy War in Afghanistan Iraq War War on ISIL
Website	http://www.jwgrom.pl/ (Polish)
Commanders
Current commander	płk Piotr Gąstał
Notable commanders	Sławomir Petelicki, Marian Sowiński, Roman Polko
Insignia
Identification symbol

JW GROM (full name: Jednostka Wojskowa GROM im. Cichociemnych Spadochroniarzy Armii Krajowej, English: "Military Unit GROM named in honour of the Silent Unseen of the Home Army") is Poland's elite counter-terrorism unit. GROM, which stands for Grupa Reagowania Operacyjno-Manewrowego (English: Group (for) Operational Maneuvering Response), which also means "thunder", is one of the five special operation forces units of the Polish Armed Forces. It was officially activated on July 13, 1990. It is deployed in a variety of special operations and unconventional warfare roles, including anti-terrorist operations and projection of force behind enemy lines.

The unit was named after the Silent Unseen (Polish: Cichociemni Spadochroniarze Armii Krajowej) - Poland's elite World War II special-operations unit.

The unit's other name is Jednostka Wojskowa 2305 (Military Unit 2305). GROM was originally modelled on NATO's most reputable special operations units such as the US Army's Delta Force, the US Navy's SEAL Team Six (DEVGRU) and the British Army's SAS.

In the 1970s and 1980s, there were several formations of special forces units within Poland, but these were either trained in purely military tasks (sabotage, disruption of communications and such) or in purely counter-terrorist roles. After the Polish embassy in Bern was taken over by a group of four Polish emigrants calling themselves Polish Revolutionary Home Army in 1982, General Edwin Rozłubirski proposed that a clandestine military unit be established to counter the threat from terrorism and other unconventional threats. This proposal, however, was initially rejected by the People's Army of Poland.