contestada

What is the purpose of Campbell's tone in this passage
of his letter?
Correspondence from John Campbell to Bernardo de
Gálvez.
But in case this, my proposition, is not admitted by your
Excellency and that some portion of the City or its
buildings are occupied by troops under your orders, then
it will be my obligation to impede that it serve as a shelter
or hiding place, by destroying both, and if I saw myself
compelled to take this cruel determination your
Excellency will be the only one responsible before God
and man, for the calamities and misfortunes that such an
act would bring. However, the experience we have of your
conduct and sentiments, removes the horror of such an
idea, and promises me that you will concur in the
mentioned propositions. Headquarters, Pensacola,
March 21, 1781.
-"Diary of the Operations against Pensacola,"
Bernardo de Gálvez
O to soothe Gálvez and make him complacent
O to warn Gálvez against taking certain actions during
the siege
to encourage Gálvez to sign a peace treaty instead
continuing to fight
O to frighten Gálvez and stop him from doing any
more damage to the city