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The common access card (CAC) is a smart card used by U.S. defense personnel and some civilians for identification, access, and authentication. It contains personal information, photo, fingerprint, and encryption key, and can be used for various purposes such as computer networks, Geneva Conventions, and travel.
Learn about the different types of US military ID cards, such as the Common Access Card and the Next Generation USID card, and how they are used to access military facilities and benefits. Find out the history and evolution of the US military ID cards, from the color-coded legacy cards to the smart card system.
DEERS is a computerized system that tracks eligibility for military benefits, healthcare, and other entitlements for service members, veterans, dependents, and others. DEERS also produces DoD ID cards, such as Common Access Cards, with an electronic data interchange personal identifier (EDIPI).
A service number is a unique identifier for U.S. military personnel, used from 1918 to 1974 and later replaced by social security numbers. Learn about the history, usage, format and examples of service numbers for different branches and ranks.
RAPIDS is a system that issues the definitive credential within the US Department of Defense (DoD) using information from the DEERS database. It authenticates individuals, captures unique characteristics, and provides a distinct identification card for DoD benefits and privileges.
Learn about the different types of warfare designations and insignia that U.S. Navy sailors can earn, such as SW, SS, CAC, and SEAL. See the list of warfare communities, their meanings, and examples of authorized titles.
Learn about the history, structure, and types of U.S. Navy ratings, which are general enlisted occupations that denote the skills and abilities of sailors. Find out how ratings differ from ranks, which describe the Navy's enlisted rank and pay-grades.
A comprehensive list of initialisms, acronyms, and abbreviations used by the U.S. government and military, organized by alphabetical order. Find the meaning and origin of terms such as AAR, AWOL, DARPA, NATO, and more.