The Drill Hall Library was originally built as a military drill hall for the Royal Navy as part of HMS Pembroke barracks in 1902. It was constructed to provide an indoor space for Navy personnel to exercise and train during inclement weather as well as other purposes.
On Monday 3rd September 1917 the Drill Hall was being used as an overflow dormitory for around 900 naval ratings when, at about 11.00pm, it suffered two hits from bombs dropped by German Gotha aeroplanes. One of the first of the First World War ‘moonlight raids’, it resulted in the loss of some 130 lives.