Commander abillity explanation?
To become a Commander, purchase the Commander’s Compendium from a trainer and double-click it. Once enabled, the player can create a squad via the party UI in order to display their Commander status, which will display a blue shield icon on maps. Mousing over the icon will display the character’s name. Although the manual is account bound rather than soulbound, each character must purchase their own. Once you have a squad, you have the ability to use the commander tools.
/squadinfo will show the names of players in the squad and the amount of supply they are carrying. This command only takes squad members into account.
/supplyinfo will show the names of adjacent allies and the amount of supply they are carrying. This command is not limited to squad members, but its radius is very small.
ALT+Mouse1 on the map opens a context menu for adding special order waypoints, to mark locations for attacks, defense, and rally points. These special waypoints are visible to squad members.
http://wiki.guildwars2.com/wiki/Commander
Few things I’d love to see them change with the commander. Foremost being able to make private squads. Hopefully they are coming with new changes in the next big WvW patch this month.