Complex sentence: Following the campaign, in October Dewar was given command of HM Gunnery School, Devonport, an important gunnery position during the war as large numbers of Reserve and Volunteer Reserve officers either re-qualified or qualified in gunnery duties.
Split into simpler sentences: Following the campaign, in October Dewar was given command of HM Gunnery School, Devonport. It was an important position as large numbers of Reserve and Volunteer Reserve officers either re-qualified or qualified in gunnery duties.