Northwest is a type of Direction. Direction is related to Back. Back is related to Refuse. 
you are likely to find Column in/at/on Army. Army is related to March. March is the opposite of Still. 
Northwest --IsA--> Direction <--RelatedTo--> Back <--RelatedTo--> Refuse 
Column --AtLocation--> Army <--RelatedTo--> March <--Antonym--> Still 