Conversation so far:
What branch of the Military was Duckworth in?
As a member of the Army Reserve, she went to flight school, later transferring to the Army National Guard and entering the Illinois Army National Guard in 1996.
When was she first deployed?
when she was deployed to Iraq in 2004.
Where in Iraq was she based?
CANNOTANSWER.
Was she injured while in the military?
She lost her right leg near the hip and her left leg below the knee from injuries sustained on November 12, 2004.
What happened to cause these injuries?
when the UH-60 Black Hawk helicopter she was co-piloting was hit by a rocket-propelled grenade fired by Iraqi insurgents.
Did she receive any medals?
a Purple Heart on December 3 and was promoted to Major on December 21.

Question: When was she promoted to Lt Colonel?
Self-contained rewrite: When was Tammy Duckworth  promoted to Lt Colonel?