The rearmost part of a force, especially a detachment of troops that protect the rear of a retreating force.
The defence, collectively the defenders.
The human beings involved in warfare, as opposed to hardware such as weapons and vehicles.
Encoded computer instructions, usually modifiable (unless stored in some form of unalterable memory such as ROM).
Hyponyms: application software, data-oriented software, kitchen table software, on-premises software, malware, schlockware, shareware, shovelware, spyware, system software