Question: Which facility was the world's first long-range guided ballistic missile tested at?

Documents:
source: Test Stand VII
text: Test Stand VII Test Stand VII (German: "Prüfstand VII" , P-7) was the principal V-2 rocket testing facility at Peenemünde Airfield and was capable of static firing of rocket motors up to 200 tons thrust. Notable events at the site include the first successful V-2 launch on 3 October 1942, visits by German military leaders, and Allied reconnaissance overflights and bombing.

source: V-2 rocket
text: V-2 rocket The V-2 (German: "Vergeltungswaffe 2" , "Retribution Weapon 2"), technical name Aggregat 4 (A4), was the world's first long-range guided ballistic missile. The missile with a liquid-propellant rocket engine was developed during the Second World War in Germany as a "vengeance weapon", assigned to attack Allied cities as retaliation for the Allied bombings against German cities. The V-2 rocket also became the first artificial object to travel into outer space by crossing the Kármán line with the vertical launch of MW 18014 on 20 June 1944.

source: Intermediate-range ballistic missile
text: Intermediate-range ballistic missile An intermediate-range ballistic missile (IRBM) is a ballistic missile with a range of 3,000–5,500 km (1,864–3,418 miles), between a medium-range ballistic missile (MRBM) and an intercontinental ballistic missile (ICBM). Classifying ballistic missiles by range is done mostly for convenience; in principle there is very little difference between a low-performance ICBM and a high-performance IRBM, because decreasing payload mass can increase range over ICBM threshold. The range definition used here is used within the U.S. Missile Defense Agency. Some other sources include an additional category, the long-range ballistic missile (LRBM), to describe missiles with a range between IRBMs and true ICBMs. The more modern term theater ballistic missile encompasses MRBMs and SRBMs, including any ballistic missile with a range under 3500 km .

source: Intercontinental ballistic missile
text: Intercontinental ballistic missile An intercontinental ballistic missile (ICBM) is a guided ballistic missile with a minimum range of 5500 km primarily designed for nuclear weapons delivery (delivering one or more thermonuclear warheads). Similarly, conventional, chemical, and biological weapons can also be delivered with varying effectiveness, but have never been deployed on ICBMs. Most modern designs support multiple independently targetable reentry vehicles (MIRVs), allowing a single missile to carry several warheads, each of which can strike a different target.

source: Shaheen-II
text: Shaheen-II The Shaheen-II (Urdu:شاهين–اا; codename: Hatf–VI Shaheen) is a land-based supersonic surface-to-surface medium-range guided ballistic missile. The "Shaheen-II" is designed and developed by the NESCOM and the National Defence Complex (NDC) of Pakistan. The Shaheen missile series is named after a falcon that lives in the mountains of Pakistan. The missile is considered to be Pakistan's equivalent to the US Pershing II. It is suspected to be a derivative of Chinese M-18 missile, a two-stage missile based on the M-9.

source: Ballistic missile
text: Ballistic missile A ballistic missile is a missile that follows a ballistic trajectory with the objective of delivering one or more warheads to a predetermined target. A ballistic missile is only guided during relatively brief periods of flight (there are unguided ballistic missiles as well, such as 9K52 Luna-M, although these may well be considered rockets), and most of its trajectory is unpowered and governed by gravity and air resistance if in the atmosphere. This contrasts to a cruise missile, which is aerodynamically guided in powered flight. Long range intercontinental ballistic missiles (ICBM) are launched on a sub-orbital flight trajectory and spend most of their flight out of the atmosphere. Shorter range ballistic missiles stay within the Earth's atmosphere.

source: Theatre ballistic missile
text: Theatre ballistic missile A theatre ballistic missile (TBM) is any ballistic missile with a range between 300 km and 3500 km , used against targets "in-theatre". Its range is thus between that of tactical and intermediate-range ballistic missiles. The term is a relatively new one, encompassing the former categories of short-range ballistic missile and medium-range ballistic missile. Examples of this type of in-theatre missile are the Soviet RT-15, TR-1 Temp and American PGM-17 Thor missile, both from the 1960s.

source: Agni (missile)
text: Agni (missile) The Agni missile (Sanskrit: अग्नि, "Agnī", "fire"; also the Hindu God of Fire) is a family of medium to intercontinental range ballistic missiles developed by India, named after one of the five elements of nature. Agni Missiles are long range, nuclear weapons capable surface to surface ballistic missile. The first missile of the series, Agni-I was developed under the Integrated Guided Missile Development Program and tested in 1989. After its success, Agni missile program was separated from the IGMDP upon realizing its strategic importance. It was designated as a special program in India's defence budget and provided adequate funds for subsequent development. As of 2008, the Agni missile family comprises three deployed variants while two more variants are under testing:

source: Ballistic Missile Defense Organization
text: Ballistic Missile Defense Organization The Ballistic Missile Defense Organization (BMDO) was an agency of the United States Department of Defense that began on 20 May 1974 with the responsibility for all U.S. ballistic missile defense efforts. It evolved from the SAFEGUARD System Organization. The original mission of BMDO was comparable to that of SAFEGUARD, which was to defend U.S. ballistic missile sites, but BMDO additionally had the more general role of conducting research and development in advanced ballistic missile defense (BMD) technology and also managed what was then called the Kwajalein Missile Range (KMR). In July 1984, BMDO became a part of the Strategic Defense Initiative Organization (SDIO) and one year later BMDO was renamed the U.S. Army Strategic Defense Command.

source: Swordfish Long Range Tracking Radar
text: Swordfish Long Range Tracking Radar Swordfish is an Indian active electronically scanned array (AESA) long-range tracking radar specifically developed to counter ballistic missile threat. It will be a part of the Indian Ballistic Missile Defence Programme. First testing of this radar was in March 2009. Main aim of the test was to validate the capabilities of the "Swordfish" Long Range Tracking Radar (LRTR). "The missile to be hit will be fired from a longer distance than it was in the earlier test. DRDO tested whether the radar could track the incoming missile from that distance or not," said a member of the project.This radar is an acknowledged derivative of the Israeli Green Pine long range radar, which is the critical component of that country's Arrow missile defence system. However, it differs from the Israeli system as it employs Indian Transmit Receive modules, signal processing, computers and power supplies. It is also more powerful than the base Green Pine system and was developed to meet India's specific BMD needs.

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Answer: Peenemünde Airfield