Sentence:  "Headwear": This was either the colpack or the <WSD>mirliton</WSD>. Regiments No. 1, 2, 3, 4 and 9 wore the former; 5, 6, 7 and 8 the latter. 
Meaning of the word marked with <WSD> tags:  An 18th-century hussar hat resembling a slightly conical shako or tall fez.