 Complete the following phrase:  As a lieutet general, Walker served as the deputy commanding general, United States Army Forces Command at Fort McPherson, Georgia from 1975 to 1977. In 1977 he was selected for promotion to general, at the time the youngest four-star general in the army, and appointed to his final position as commanding general, Allied Land Forces Southeast, headquartered in Turkey. His time in Turkey was a tumultuous one, coinciding with the United States arms embargo against Turkey for 