war-fighter
n.— «According to Anderson, improving soldiers” digestive health is a primary concern for the U.S. Army because “war-fighters”-a term used to describe members of all the military branches-have long suffered from intestinal issues, particularly diarrhea, while serving overseas.» —“Live cultures called to active duty” by Kate Radway The Windy Citizen (Chicago, Illinois) July 15, 2008. (source: Double-Tongued Dictionary)
Further reading
If you work in tech support, you might use snarky slang for problems caused by computer users themselves. There’s the acronym PEBCAK, for example, which stands for Problem Exists Between Chair and Keyboard. And: a lush poem about the sea inspired by...
The expression to run the traps means “to perform due diligence” or “solicit a wide variety of opinions” or “investigate every angle thoroughly.” This metaphor derives from the literal sense of running the traps, which refers to hunting and fishing...
“War-fighter” is generally used to distinguish military members in actual combat/fighting roles from those in support activities not directly involved in prosecuting combat operations.