In a government context, Westminster often refers to the Parliament of the United Kingdom, which is located in the UNESCO World Heritage Palace of Westminster-also known as the Houses of Parliament.he Westminster area formed part of the City and Liberty of Westminster in Middlesex. The ancient parish was St Margaret; after 1727 this became the civil parish of 'St Margaret and St John', the latter a new church required for the increasing population.
Definition of EXECUTIVE OFFICER. : the officer second in command of a military or naval organization or vessel. ADVERTISEMENT.efinition of EXECUTIVE OFFICER. : the officer second in command of a military or naval organization or vessel. ADVERTISEMENT.
There are executive officer slots in each company, battalion, and brigade, though generally not at higher levels of command until the army level of command. The XO is typically the second-in-command, and serves as the day-to-day manager of the command staff.he US Air Force uses the term executive officer for officers assigned as personal staff officers to general officers. Their role is similar to aides-de-camp in the US Army, Marine Corps and Air Force and flag aides and flag lieutenants in the US Navy and Coast Guard.