This is the 10556th most frequent Korean word.
국방부로
"To the Ministry of National Defense."
Here, '국방부로' functions as an adverbial phrase indicating the destination or goal of the action of going.
나는 국방부로 보고서를 전달하러 갔다.
I went to deliver a report to the Ministry of National Defense.
In this sentence, '국방부로' indicates the target recipient of the communication effort.
국방부로 연락해 문제를 해결하기로 했다.
We decided to contact the Ministry of National Defense to resolve the issue.
Although slightly altered, the derived '국방부로부터' conveys the source of the information respecting origins.