The following is the Monster Country Federation after Zhong Chen further enhanced his strength using souls. Since Zhong Chen hasn't gone to the Pirate World yet, some content might not align.
However, these discrepancies don't matter because Zhong Chen is about to head to the Pirate World, and he will raise the strength of these individuals once he arrives.
Current Status of the Monster Country Federation
Capital: Chenlu City
King: Rimuru (SS+)
Regent: Zhong Chen (??? )
Slacker: Veldora (SS)
Unofficial Slacker: Milim (SS+)
Chief Administrator: Kagaya Ubuyashiki (S-), Rigurd (S-)
Academy City Chairwoman: Shizue Izawa (S+)
Tokiwadai Academy Headmistress: Toreini (S+)
Chief of Finance: Rigurd (S-)
Chief of Construction: Kurut (S+)
Chief of Education: Shizue Izawa (S+)
Chief of Research: Kajin (S)
Chief of Foreign Affairs: Testarossa (SS-)
Chief Inspector: Ultima (SS-)
Total Population: 7.4 million
Monsters: 2 million
Humans: 400,000
Cursed Children: 5 million
Secondary Characters:
Intern Administrator: Saint Tenko
Intern Administrator: Nico Robin
Intern Legion Vice Commander: Kamado Tanjirou, etc.
There are actually other characters, but they won't be listed one by one here.
Troop construction is divided into Regular Forces and Special Forces.
Regular Forces
Commander-in-Chief of All Forces: Benimaru (SS-)
Chief Instructor of All Forces: Hakurou (S++)
Zhong Chen's Secretary: Kanae Kocho (S)
Rimuru's Secretary: Shion (S+)
Chief of Logistics: Shuna (S+)
First Legion Commander: Benimaru (SS-)
Deputy: None (Currently undecided who will serve! Readers, please feel free to recommend someone!)
Total Legion Strength: 15,000 (B- to A+)
Second Legion Commander: Rengoku Kyoujurou (S+)
Deputy: Giyu Tomioka (S)
Total Legion Strength: 15,000 (B- to A+)
Third Legion Commander: Kurut (S+)
Deputy: Gyomei Himejima (S)
Total Legion Strength: 15,000 (B- to A+)
Fourth Legion Commander: Riguru (S) (Former First Legion Deputy)
Deputy: Gobuzo (S-) (Transferred from City Wolf Rider Patrol)
Total Legion Strength: 15,000
Fifth Legion Commander: Gabil (S) (Hasn't appeared until now!)
Deputy: (Currently undecided who will serve! Readers, please feel free to recommend someone!)
Total Legion Strength: 15,000
Sixth Legion Commander: Ultima (SS-) (Primordial Violet currently also serves as Chief Inspector)
Deputy: Veron (S) (Primordial Violet's direct demon subordinate)
Total Legion Strength: 15,000
Covert Mobile Force Commander: Souei (S+)
Deputy: Souka (S-)
Total Force Strength: 2,000 (B to Special A)
City Wolf Rider Patrol Commander: Gobuta (S)
Deputy: Gobuta (Special A+)
Total Force Strength: 1,000 (B+ to A+)
Special Forces (Not under military command)
Royal Knights [Special Imperial Guard]
Commander: Diablo (SS)
Deputy: Primordial Yellow, Carrera (SS-)
Total Force Strength: 300 (Special A-rank to Special A+)
Imperial Guard Corps [Special Imperial Guard]
Imperial Guard Corps Commander: Izayoi Sakuya (SS-)
Deputy: Gobuta (S)
Total Corps Strength: 5,000 (A- to Special A+)
Academy Guard [Forces under the Academy City Council]
Commander: Zechien (SS-)
Deputy: Ranga (SS-)
Total Force Strength: 3,000 (B+ to Special A+)