commissariat

As nouns the difference between commissariat and commission

is that commissariat is a supply of food while commission is a sending or mission (to do or accomplish something).

As a verb commission is

to send or officially charge someone or some group to do something.

As nouns the difference between commissary and commissariat

is that commissary is a store primarily serving soldiers while commissariat is a supply of food.

As a noun commissariat

is a supply of food.

As an adjective commissarial is

of or pertaining to a commissary.