I know a lot about military terms, weapons, and equipment so don't be shy to ask me if you have any questions.
Here are some abbreviations which are good to know:
QRF - quick reaction force (such as a special forces squad that can be deployed quickly)
NBCW - nuclear, biological, chemical warfare
ETA - estimated time of arrival (good term to use in a dio-story)
LZ - landing zone (where a helicopter will land to deploy or extract a squad)
SNAFU - situation normal, all f***ed up (also a term that could be used in a dio-story)
SIT-REP - situation report (an updated message telling commanders what's happening on the battlefield)
MEDEVAC - medical evacuation for a soldier or squad that requires medical treatment
For an entire list of terms/abbreviations, check this out:
US Military terms, abbreviations, and slang