1.
The military police are the part of an army, navy, or air force that act as its police force.
The government has said it will reform the military police.
N-SING-COLL
2.
Military police are men and women who are members of the part of an army, navy, or air force that act as its police force.
The camp is surrounded by razor-wire fences and guarded by military police.
N-PLURAL