North American Forts - American Forts Network
Provides charts with information about all known historic military and pioneer forts in the US and Canada, including links to official websites as well as bibliographies of reference sources cited.
NATOTerm: Terminology database
NATO Terminology NATO Term - contains non-classified military terminology, as well as non-military terminology relevant to NATO. (Available through JEL and JEL+ only)
Provides acronyms and definitions.
Dictionary of Military & Associated Terms
2001/2004 Dictionary of Military and Associated Terms. Joint Publication 1-02
Thesaurus – Defense Technical Information Center
Defense Technical Information Center
Dictionary
2017 Dictionary of Military and Associated Terms