Today I went down to Mossy Toyota in San Diego to pick up an oil filter for my truck. I barely made it there 2 minutes before closing and luckily the parts department was still open. I told the gentleman behind the counter what I needed and as he was looking it up I briefly mentioned how it took me an hour to drive the 10 miles or so from base to the dealership.
After he came back with the filter he inquired again about my coming from base, and after confirming that I was in the military he promptly handed me the filter and said, "This one is on the house".
Granted he probably just didn't want to turn the computer/register back on for a $6 grand total, but I greatly appreciated the gesture.