sergeant
🇺🇸
/ˈsɑːrdʒənt/
🇬🇧
/ˈsɑːdʒənt/
a middle-ranking soldier in the army or air force, not an officer
The sergeant trained the new soldiers.
a UK police officer below an inspector
The duty sergeant helped me at the police station.
a US police officer below a lieutenant or captain
The sergeant led the police team.