IIRC, the miltary uses "mils" instead of degress, minutes, and seconds. There are 6400 mils in a complete circle, while there would be 360 * 60 = 21600 minutes in a circle. I seem to remember that one mil supposedly equals 1 meter lateral deviation at 1000 meters of range. I am not a trigonometry master, or I would work that up to see if it were true.. Anyway, that's what they told us in artillery school.
Another odd meters/yards tidbit: the known distance qualification range at Parris Island uses yards, where MCRD San Diego, which uses the Camp Pendleton range, uses meters. So, if you qual on the range in California, you get to add 4 points to your score since you are shooting farther.