Question

what does it mean to \quarter\ soldiers?
to house them in private civilians homes
to banish them from service
to force them to serve against their will
to free them from prison

Explanation:

The term "quarter" soldiers, especially in a historical legal context (like the US Third Amendment), refers to the requirement for private civilians to provide housing and accommodation for military personnel. The other options do not match this definition.

Answer:

to house them in private civilians' homes