Female soldier in US, going to right and left (4)
I believe the answer is:
girl
'female' is the definition.
(I know that female can be written as girl)
'in us going to right and left' is the wordplay.
'in us going' becomes 'gi' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to right' becomes 'r' (common abbreviation).
'and' says to put letters next to each other.
'left' becomes 'l' (common abbreviation).
'gi'+'r'+'l'='GIRL'
'soldier' is the link.
Can you help me to learn more?
(Other definitions for girl that I've seen before include "One of 8 [LASSES]" , "Maidservant" , "Lass" , "Lassie" , "See 5" .)