The Resistance Allied Commander is the officer who is the most senior commander in the Resistance. The Resistance Allied Commander is responsible for planning, preparing, and directing the Resistance's combat operations against Skynet's forces.
Terminator Salvation timeline
The post of Resistance Allied Commander was created in 2004, when surviving generals and admirals from several nations chose General Hugh Ashdown to command the Resistance.
John Connor had assumed this post by 2029.