In the US Army, Air Force and Marine Corps, a commissioned officer superior to a captain and inferior to a colonel. The equivalent rank in the US Navy is Lieutenant Commander[?]. The insignia for all four positions is a gold oak leaf.
... households out of which 22.2% have children under the age of 18 living with them, 55.9% are married couples living together, 8.2% have a female householder with no husband ...