I have a question that readers of this post may know the answer to saving me considerable time researching.
I know the oath the President takes to preserve, protect and defend the Constitution.
I know the oath the Congress takes to support and defend the Constitution.
I know the oath military officers take to support and defend the Constitution.
I know the oath the enlisted military take to support and defend the Constitution and to obey orders that are in accord with the Uniform Code of Military Justice.
The subtle distinction between officer oath and enlisted oath is that
officers are bound to disobey any order that violates our Constitution,
while enlisted personnel are bound to obey only lawful orders.
What oath do Armed Federal Agents take?
Oath For Federal Employees
http://archive.opm.gov/constitution_initiative/oath.asp
"I, [name], do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter. So help me God."