Most newer and older players aren't quite sure of the 1MD ranks, so I thought I'd make a list to help with Tryouts, Rank Comparisons and Curiosity. Enlisted
E-1 | Pvt
E-2 | PFC
E-3 | LCpl
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Non-Commissioned Officers (NCO)
E-4 | Cpl
E-5 | Sgt
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Staff Non-Commissioned Officers (SNCO)
E-6 | SSgt
E-7|GySgt
E-8 | MSgt
E-8A| 1stSgt
E-9 | MGySgt
E-9A| SgtMaj
E-9B| SMMC
Warrant Officers
W-1 | WO
W-2 | CWO2
W-3 | CWO3
W-4 | CWO4
W-5 | CWO5
Officers
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Company-Grade
O-1 | 2ndLt
O-2 | 1stLt
O-3 | Capt
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Field-Grade
O-4 | Maj
O-5 | LtCol
O-6 | Col
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Generals
O-7 | BrigGen
O-8 | MajGen
O-9 | LtGen
O-10 | Gen
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The current General of the marines is Gotham, the SMMC spot has not been taken.