Insignia, Grade, Platoon Sergeant (E-7) or Sergeant First Class (E-7) U.S. Army
美国陆军一级军士（E-7）或排长（E-7）徽章、等级

2017-12-19

INSIGNIA, GRADE, PLATOON SERGEANT (E-7) OR SERGEANT FIRST CLASS (E-7), ARMY (SUPERSEDING MIL-DTL-14639/6F)
陆军排军士（E-7）或一级军士（E-七）徽章（取代MIL-DTL-14639/6F）

1999-01-25

INSIGNIA, GRADE, PLATOON SERGEANT (E-7) OR SERGEANT FIRST CLASS (E-7), ARMY (SUPERSEDING MIL-I-14639/6D) (S/S BY MIL-DTL-14639/6F)
陆军（取代MIL-I-14639/6D）排长（E-7）或一等军士（E-7）军衔徽章（由MIL-DTL-14639/6F提供）

1993-08-31