Sentence:  The next morning, after the drumbeat for the morning muster parade, Gore-Browne arranged for the <WSD>house flag</WSD> to fly at half-mast to mourn the King's death, and told the workers there would be a special memorial service in the chapel on Sunday which all would be expected to attend. 
Meaning of the word marked with <WSD> tags:  Flag that identifies a company, unit, or group.