What type of details about cyrus b. comstock can be gathered from the following bio? Bio: cyrus ballou comstock -lrb- february 3 , 1831 -- may 29 , 1910 -rrb- was a career officer in the regular army of the united states . after graduating from the united states military academy at west point in 1855 , comstock served with the army corps of engineers . at the beginning of the american civil war , he assisted with the fortification of washington , d.c. . in 1862 , he was transferred to the field , eventually becoming chief engineer of the army of the potomac . in 1863 during the siege of vicksburg , he served as the chief engineer of the army of the tennessee . the most significant phase of comstock 's career began in november 1864 when he was appointed to the staff of lt. gen. ulysses s. grant , becoming grant 's senior aide-de-camp . in 1865 , comstock was appointed the senior engineer in the assault on fort fisher , north carolina , and the assault on mobile , alabama , both of which were successful . by the end of the war , comstock had earned the awards of the honorary grades of brevet major general in the volunteer army and brevet brigadier general in the regular army . after the close of the war , comstock served on the military commission for the trial of the conspirators in the assassination of president abraham lincoln . he was dismissed from the commission for his criticism of the proceedings . later comstock continued with the army corps of engineers , took part in several engineering projects , and served on the mississippi river commission , of which he was president .
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