>>63989939 (OP)Grand Strategy is the term applied to the way in which a state uses all the levers of power to achieve its specific aims at the highest levels of planning. Think about the US cabinet positions. Dept of Defense, of Commerce, of the Interior, of Energy, ect... Each of those basically corresponds to some sector of state power that can be directed to achieve some goal for the state.
An example form pic rel would be Japan in the 1880s. They saw China get absolutely crushed because it refused to westernize, and thus set about rapidly becoming western. Their grand strategy saw the Chinese as declining, and they feared Russia would aggressively fill the power vacuum and be a credible threat to them in a way China couldn't. Their grand strategy then was to reinvent their educational and industrial sectors, so that they could produce the needed war materials, to invade Korea and displace the failing Chinese puppet government there, and prevent the Russians from completing their trans-Siberian rail line as planned, which would have allowed them to ship troops to the Korean border. They also used their diplomatic corps to distribute 'war reports' written in European languages to own the narrative and win points for being the 'reasonable and modern asians'. It worked.
Unfortunately, grand strategy is messy when politicians do it. Because the Korean invasion and Chinese humiliation went so well, the public in Japan clamored for a full on conquest of China and after the Russo-Japanese war, Japan went full empire-building, which put them on a collision course with a western power, precisely what they wanted to avoid by originally only fighting short, limited objective wars that didn't directly impact any Europeans besides Russia (and most of Europe hated them anyway).