You gain 1 Energy for each ally affected by one of your Shouts or Chants (maximum 1 Energy for every 3 ranks).
Spear Mastery increases the damage you do with spears and your chance to inflict a critical hit when using a spear. Many skills, especially spear attack skills, become more effective with higher Spear Mastery.
No inherent effect. Many Paragon skills, especially those that protect your allies or increase your tactical position on the battlefield, become more effective with higher Command.
No inherent effect. Many Paragon skills, especially those related to Energy management or that inspire your allies, become more effective with higher Motivation.