True words.
Soldiers in the US military swear an oath to defend The United States. Not their own individual state but the nation as a whole. Certainly it can be understood that soldiers of individual states would feel in their hearts and minds they are defending their states.
The great majority of the Souths officers had previously sworn that oath prior to secession as officers in the US Army. Rather odd of today’s Democrats to call their Democrat ancestors traitors but indeed they were.