correspondences
"correspondence" is both singular and plural. Perhaps use "letters" here?
correspondences
"correspondence" is both singular and plural. Perhaps use "letters" here?
features
figures?
handwritings
"hands"?
done
word choice? perhaps "composed"?
;
use colon here
Private
should be "private" unless joined to his name, as in "Private Miller."
It is also regarded by American historians
"citing" refers to "it" currently. Suggest you revise to "American historians also regard it as . . . wars, citing . . ."