Who is Major Lucius Tubbs from Sharpe's Skirmish and what is their importance?

Major Lucius Tubbs is described as a plump and cheerful man, who is in charge of reviewing the French muskets that remain at San Miguel. Sadly, Tubbs is also a corrupt man, who plans to condemn many of the muskets in order to sell them on the black market. When Tubbs is captured by the French, he makes derogatory remarks about Sharpe. He later dies in the fire at San Miguel.