When observing a unit in the field training or conducting combat operations, what are the things that are markers of disciplined units?

Dispersion, the condition of their gear (i.e. gear bombs or organized and practical load out), general motivation among junior enlisted...hey I see from your profile you're 3rd LAR, I was 2nd myself sir Semper Fi

CWO3 (Join to see) Three things. 1. Intense training so that every man knows his responsibilities. 2. Noise discipline. 3. Leaving as little footprint as possible.

The most obvious test for me was to watch a training unit prepare a deliberate defense, after a long tiring tactical movement. It is easy to decide you deserve a break. Taking a break leaves you incredibly vulnerable when it is real.
_Are they serious about their defensive preparations? Real fighting holes? Real Sectors of Fire? Walked FPL and sighted FPL's? Real Fire Plan Sketches? Primary and alternate positions? Selective clearing of fields of fire? OP's and LP's? etc. etc. etc.
_Do they move about openly or as if they may be under observation?

Individual and unit discipline is the difference between success and failure, between life and death.