The government requested the Self-Defense Forces to deploy for disaster relief in Okinawa.
Literal
Government [subject-が] Self-Defense-Forces [dative-に] Okinawa [to-への] disaster-dispatch [object-を] requested.
A news-reporting sentence. 自衛隊 ('Self-Defense Forces') is Japan's military, formally called that due to the post-WWII constitutional restriction on offensive forces. 災害派遣 ('disaster dispatch') is a formal term for military deployment on disaster-relief missions — a major peacetime function of the SDF. Again the composite particle ~への attaches the directional phrase to 災害派遣 as a noun modifier. 要請する is the formal verb for 'to request officially.'