I think what makes it even more powerful is the history behind it - which you probably know but I don't mind being redundant. It was written by MacCrimmon's sister in 1745 when her brother went off to war.

The midi I did of it (based on Helen Hopekirk's version [1905]) turned out wonderfully. If you're interested it's here. There are some neat links to places that have information on who the MacCrimmons were.