Old fashioned as it may seem to some, it is my duty to serve...
Old fashioned as it may seem to some, it is my duty to serve my country. (And) I didn't seek this job but I want to do it, and I will do my very best.
Old fashioned as it may seem to some, it is my duty to serve my country. (And) I didn't seek this job but I want to do it, and I will do my very best.