'Building for families' doctrine includes soldiers (8)
I believe the answer is:
tenement
'building for families' is the definition.
'tenement' can be an answer for 'building' (I've seen this before). I am not sure about the 'for families' bit.
'doctrine includes soldiers' is the wordplay.
'doctrine' becomes 'tenet' (both can mean a belief or value).
'includes' indicates putting letters inside.
'soldiers' becomes 'men' (men can mean a group of soldiers).
'tenet' placed around 'men' is 'TENEMENT'.
Can you help me to learn more?
(Other definitions for tenement that I've seen before include "Run-down building housing many people" , "Run-down dwelling housing many people" , "Apartment in a US block" , "Piece of owned land" , "Dwelling-place" .)