I never encountered any officer who expected deference on the sporting field.
Back in the 80s as a baby pilot playing rugby for my flying training station, we used to have a post match chuckle in the bar at the expense of any army unit we happened to be playing. All too often we heard "pass to me, Sir" or "kick for touch, sir" etc whenever an army officer got the ball. I guess they had the last laugh though, as all too often they beat us, and that was in the days before the British Army was full of Fijian rugby internationals
As for saluting on entering an office, I was taught that when I went through IOT (and still do it myself), but I think open plan offices has made a bit of a dent in the tradition.
Personally I think it is a decline in the standards instilled (or not) at Sleaford Tech these days - but then I am getting old now.