FOS meaning in Military and Defence ?

Answer:

INFO: Full form for FOS is Forward Observer System in Military and Defence category
FOS also has other full forms in other categories mentioned below.

Full Form	Category
Forensic and Osteoarchaeological Services	Academic & Science
Front Of Store	Academic & Science
Florida Ornithological Society	Academic & Science
Forrest	Airport Code
Factory Outlet Store	Business
Furniture Online Shop	Business
PhosCan Chemical Corporation	Business
Financial Origination System	Business
Fructo-oligosaccharide	Chemistry
Friends Of Scouting	Community
Friends Of Stern	Community
Found On Shelf	Community
Financial Ombudsman Service	Community
Festival of Speed	Community
Open Scouting	Community
Failover Services	Computing
File Output Stream	Computing
Fedora Operating System	Computing
Free Online Scholarship	Computing
Family Of Service	Computing
File Organization System	Computing
Fantastically Oaky Stuff	General
Friend Of Sauce	General
Fortress Of Solitude	General
The Fisheries Operation System	General
Flight Operation Security	General
Full Of Sh*t	General
Friends Of Symfony	General
Fleet Online Solutions	General
Friends of the Sheriff	General
Ford Of Sweden	General
Friend of the Sea	General
Ford Of Spain	General
Forester S	General
Fading Of Settlement	General
Factored Operating System	General
Foundations of Success	General
FIDUCIAL Office Solutions	General
Foundry Of Space	General
Flight Operations System	General
Filozoikos Oikologikos Syllogos	General
First Of the Season	General
Flexible Open And Social	General
Friends of Severndale	General
Fiber optic Sensor	General
Fibre Optic Service	General
Follow On Support	General
Field Of Study	General
Fabry Outcome Survey	General
Flight Operations Segment	General
Ferry Operators Service	Governmental
Four Owners Share	Governmental
Freedom Of Speech	Governmental
Finger Of Suspicion	Governmental
Federación Obrera Socialista	International
Full Of S***	Internet
Fear Of Socializing	Internet
Full Of Stool (constipated)	Medical
Finkel Osteogenic Sarcoma	Medical
Full Order Scan	Medical
Freak Out Squad	Messaging
Full of Shit	Military and Defence
Forward Operating Site	Military and Defence
Full Operational Status	Military and Defence
Forward Observer System	Military and Defence
Forrest, Western Australia, Australia	Regional
Fundamental Operating System	Softwares
Faint Object Spectrograph	Space Science
Flight Operations Support	Space Science
Feat of Strength	Sports