| Abbreviation | Definition |
|---|---|
| S | Scenario |
| S | Secret |
| S | Shoot |
| S | Sir |
| S | Spineless |
| S | Submersible |
| S | Support |
| S&A | Safety and Arming |
| S&D | Search and Destroy |
| S&F | Store-And-Forward |
| S&GSLCMC | Soldier and Ground Systems Life Cycle Management Command |
| S&I | Standardization and Interoperability |
| S&M | Scheduling and Movement |
| S&P | Stake and Platform |
| S&R | Search and Recovery |
| S&R | Search and Rescue |
| S&S | Supply and Service |
| S&T | Science And Technology |
| S&T | Scientific and Technical |
| S&T | Supply and Transportation |