Rag, we all abbreviate long names, and I will continue to do so.
Keith is a massive abbreviation of mine.

Re artillery, in Dublin in was used in the direct fire role.
The gun was pointed at the target and fired using its sights.
A building is an unmissable target. They would have aimed at the actual windows being used as fire positions.

Look at the pictures I linked to of Liberty Hall and YMCA.