The highest Non-Commissioned Officer rank in the US Army is Sergeant Major of the Army. The current SMOA is Kenneth O. Preston.
SPC is an abbreviated form of the rank of Specialist, which is the highest lower enlisted rank before one becomes a noncommissioned officer.
They hold the rank of Private through Specialist. Basically, any enlisted soldier whose rank is below that of a noncommissioned officer.
Specialist 5 - it's a discontinued Army rank. A Specialist got the same pay as a Sergeant (also pay grade E5), but was not a noncommissioned officer.
Specialist is a rank - Pay Grade E-4 - which is classed as lower enlisted. Pay is equal to that of a Corporal, but Corporal is the higher rank of the two (Corporal is a noncommissioned officer rank, Specialist is not).
Chief of Staff is the title of the highest ranking officer of the US Army. He holds the rank of General, which is an 0-10 / 4 star rank. The title of Commander-In-Chief is given to the President of the US and is the commanding authority for all military forces, but the holder of this rank, while often having served in the military, is not a military officer by virtue of title.
In the United States Army the highest ranking officer is a General. Bellow him is a Lietenant General. But the highest rankin officer is a four star general deemed chief of staff
Lieutenant General (OF-9) As Field Marshal is the highest rank, General must be the second highest and Lt-Gen the third.
Field Marshal is the highest military rank in Pakistan Army.
Sergeant Major of the Army is the highest rank NCO.
No, a second lieutenant is the lowest rank for a new officer in the army.
Presuming you mean "chief", the highest ranking officer in the British army is called a Brigadier.
The highest rank Ulysses S. Grant held in the U.S. military was General of the Army. He received this rank in 1866, making him the first ever officer to achieve this rank in the U.S. Army.