Is the term "Front Line" outdated?

If the description is accurate and nothing else describes it as well, it is not out-dated.

No, not an outdated term when taken in its proper context. "Front line", "Forward Edge of the Battle Area", "Main Line of Resistance"..... All tems to denote an area of engagement during battle, as in, "Take this SITREP back to the rear so the chairwarmers will know what's going on here on the, "Front line", "Forward Edge of the Battle Area", "Main Line of Resistance". The current crop of bad guys wisely don't want to get involved in a force on force engagement. Overrunning unarmed civilians is more their speed, but should they decide to collectively grow a pair and take on some real warriors then there will be, "Front lines", "Forward Edge of the Battle Areas" "Main Lines of Resistance".

No. Fronts may be fluid or porous but they will exist outside of COIN ops. Even COIN sees fronts to a degree.

no

is the term warrior, soldier, outdated, unfortunately yes. the lines are blurred, we have veterans in and out of uniform, retired, disabled, and working, who may have to present a " front line" at a convenience store, grocery store, neighborhood or easily a battlefield! we fight terrorist, whose 'battlefield is anything but!'

yes, adapt or loose

No, it is not outdated, it has just changed. Front Line used to have a larger meaning, something you can measure on a country map scale. It has just been modified into something that we understand is more versatile, more mobile than before.

When you are under fire, you can be sure there is still a front line, sometimes that front-line is a line, and sometimes it is 360 degrees around your unit.

Where ever you are or what ever you call it there will be a front line. Your facing it now and make sure you attack.

No, just because our current conflicts and operations don't fall under that classification doesn't mean there won't be future conflicts that will.

I don't think so. That description brings an immediate picture to mind of anyone familiar with any war all the way up to Korea. A front line unit tells me a direct action combat unit. Even in Desert Storm/ Desert Shield it made sense to use.