 As the end of war approached and hostilities with the Sioux Indians loomed , Raynolds 's knowledge of and experiences in the Great Lakes region became more important to the army than his command of the fortifications of Harpers Ferry . As a result , he returned to the Great Lakes as superintending engineer of surveys and lighthouses in April 1864 , and saw no further combat for the rest of his career . Before the war was over , on March 13 , 1865 Raynolds was brevetted to brigadier general for meritorious service . 
