Very strict in one's military appearance and grooming
[1970s+ Army; fr STRAC, acronym for Strategic Army Corps, chosen units in constant combat readiness, hence elite troops]
The best of them seems to be the answer of Professor strack, of Berlin.
Dat man trawmp on him in de dark, and he strack him wid his hawny tail!
And noo I tell ye plainly that, although I strack him times and times wi' my whup—and saired him weel!