This is the 15126th most frequent Russian word.
полк
Regiment.
The word 'полк' is used here in the meaning of a military unit or regiment.
В полку служат опытные офицеры.
Experienced officers serve in the regiment.
The word 'полк' denotes a group of soldiers organized for battle.
Полк солдат приготовился к следующей битве.
The regiment of soldiers prepared for the next battle.
The word 'полк' refers to a specific historical or honorary military unit in this context.