
The NATO Army Armaments Group (NAAG) Integrated Capability Group Indirect Fires (ICGIF), formerly Land Group 4, and their Sub Group 2 (SG2) on Surface to Surface Ballistics has created a widely used set of shareable fire control software using the
Ada programming language. This product is known as the SG2 Shareable (Fire Control) Software Suite (S4) and is sometimes abbreviated as S
4 when referenced.
Fire-control system
A fire-control system (FCS) is a number of components working together, usually a gun data computer, a director and radar, which is designed to assist a ranged weapon system to target, track, and hit a target. It performs the same task as a hum ...
developers and most of the international (primarily NATO) ballistics communities are familiar with the mature NATO Armaments Ballistic Kernel (NABK) and other software component items that have emerged from the NABK development effort. The collection of these software items has been enhanced into the “suite” of NATO shareable fire control software.
Significant development effort occurs in Aberdeen, Maryland, USA in the Firing Tables and Ballistics (FTaB) Division, Armaments Research, Development and Engineering Center (ARDEC) with contributions from a variety of agencies within participating NATO nations.
NATO Standardization Agreements (STANAGS) and Supporting Research
The S4 implements a variety of NATO
Standardization Agreements (STANAGs) including
STANAG 4355 and
STANAG 6022.

A number of papers and presentations have been published, such as a formal description of the early history of the suite and a later presentation
in the International Symposium of Ballistics (ISB) forum sponsored by th
International Ballistics Society (IBS)(S4 testing research and related contributions by Germany)
(Crest Clearance algorithm contributions by Germany)
Integrating Weapon Systems

Specific examples include:
Canada
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Denmark
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France
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Germany
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Panzerhaubitze 2000
The Panzerhaubitze 2000 (), meaning "armoured howitzer 2000" and abbreviated PzH 2000, is a German 155 mm self-propelled howitzer developed by KNDS Deutschland (formerly Krauss-Maffei Wegmann (KMW)) and Rheinmetall in the 1980s and 1990s for t ...
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Artillery Gun Module
The Artillery Gun Module (AGM, ''Artillerie-Geschütz-Modul'') is an air-portable 155 mm self-propelled howitzer designed by Krauss-Maffei Wegmann. It is based on technology used in the German Army Panzerhaubitze 2000 (PzH 2000) system, to pr ...
Norway
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Sweden
Turkey
United Kingdom
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United States
References
External links
* {{Cite web, title=NATO Organization - Structure , url=http://www.nato.int/cps/en/SID-11879817-AC96E660/natolive/structure.htm , archive-url=https://web.archive.org/web/20160304115035/http://www.nato.int/cps/en/SID-11879817-AC96E660/natolive/structure.htm , archive-date=2016-03-04
NABK BASED NEXT GENERATION BALLISTIC TABLE TOOLKIT, Sevsay Aytar Ortac, Umut Durak, Umit Kutluay, Koray Kucuk, Maj. Can Candan, 23RD INTERNATIONAL SYMPOSIUM ON BALLISTICS, TARRAGONA, SPAIN 16-20 APRIL 2007
Military computers