Are the four words on Yue Fei's back loyal to the country or loyal to the country? Why?

According to my research, Master Yue has at least 12 tattoos. On his back is his loyalty to the country, and on his face are eight big characters: "Serve the country wholeheartedly and swear to kill the gold thief." Needless to say, the loyalty on the back is to serve the country. The words on the face are because Yue Fei joined the Eight-character Army, which has these eight words on its face.