Each player and each team as a whole gains experience and levels. Experience is gained from defending structures and siege, killing NPCs and enemies, building and repairing structures, healing and resurrecting fallen breatheren. Both teams and players have a level 10 max. As levels are gained a player has the ability to add 3 percentage points to their characters attributes: health, regeneration, mana, damage, and armor. The team commander also has the ability to add attribute bonuses which affect each player on the team. There is a cap of 20% bonus for any given category and a maximum of 30 percentage points total. This means that it is a nice advantage but that skill is still the most important aspect of winning a skirmish.
There is also overall account experience and an account level. This is simply a meter to show how much you've played and how well you play. It does not offer any specific advantages to a level 50 account over a level 10 account. The higher level simply signifies longer playing period and / or more skill and effectiveness in game.
