Definition of provost guard in English:

provost guard

noun

US
  • A detachment of soldiers acting as military police under the command of a provost marshal.

    • ‘The provost guard began rounding up black refugees living on the base early in the morning.’
    • ‘Spoerri was later seen trying to convince the provost guard at the Rapidan River crossing to let him cross and proceed to Washington, saying that if he stayed he would be captured, and that his regiment had been completely destroyed.’