See the situation in 1815, pp 348-350:

http://books.google.com/books?id=DCXaVJ65BHAC&pg=PA350

Joseph Boulcott was Baggage Master in 1815:

"21. [Oct. 1850] Aged 73, Mr. Joseph Boulcott, late clerk of the cheque under the Board of Ordnance. He served with the Guards in the Walcheren expedition, and in Holland, in Corsica, and in the retreat to Corunna in 1809. In 1812 Mr. Boulcott was present at the sieges of Burgos and Cadiz, and in 1815 at Waterloo. He was baggage-master to the Duke of Wellington in France until the withdrawal of the army in 1818, in which year his Grace appointed Boulcott clerk of the cheque, which office he filled till 1849, when he retired on a pension."

http://books.google.com/books?id=U3RBAAAAYAAJ&pg=RA1-PA272