In the army life we spit out acronyms like they are our children's names. Most of the time we don't always realize we are doing it. I try not to use too many acronyms but here are a few good ones to know ...
FOB - Forward Operating Base (where service-members live while deployed)
FRG - Family Readiness Group (An organization that assists families of soldiers, gives information, helps boost morale)
ACU - Army Combat Uniform (the "camo" they wear)
TDY - Temporary Duty
PL - platoon leader
R&R - the 15 days of leave a soldier receives (I believe if they are ordered to deploy for 9 months or longer)
Please feel free to add any that I missed or to ask what something means.