Alliance version: Marking the Fallen - Quest - World of Warcraft
Horde version: Marking the Fallen - Quest - World of Warcraft
The provided quest item 'Banner of the Fallen' does not trigger the global cooldown,
Just spam click the banner, When I did the quest I was able to mark the same soldier 3 times.
SS: http://data.fuskbugg.se/dipdip/WoWSc...810_151229.jpg
Note: I did not try this out with a horde character but it should work the same way.
Edit: Spelt convenience wrong ;_;