E-8 USA
E8? Isn't that like a Comman Sgt Major in the Army?
PS
a pay grade of E-8 in the US Army covers two separate duty positions.
MASTER SERGEANT, MSG, a non commission officer,NCO, who performs various middle management functions in the command structure. MSG's are more likely to be in charge as managers of functions like supply, maintenance, communications and mess (feeding the troops). Insignia is three chevrons over three rockers nothing in the center.
FIRST SERGEANT, 1SG, another NCO, this position is always in the units headquarters section. 1SG's are the Commanders right hand in managing the enlisted personnel within the unit. Good 1SG's are more then likely to be tasked to train junior officers and see that they stay out of trouble by the unit commander.
Rank insignia is three upper chevrons over three rockers with a diamond in the middle.
E-9 Sergeant Major, SMG, Insignia three chevrons over three rockers with a five point star in the middle. Command Sergeant Major, CSM, three chevrons over three rockers with a five point star with a wreath surrounding the star. Normally the senior enlisted advisor of larger headquarters elements to the commander.
This help you out some what? I could write you a book on the in's and out's of both grades but if you want more just PM me and we can go off channel.