Federal troops at Fort Donelson totaled an estimated 21,500, with 500 killed, 2,108 wounded, and 244 missing, for an aggregate of 2,832 casualties. McClearnand's Division had a strength of 8000 and suffered 311 killed, 1058 wounded, and 183 missing, for an aggregate of 1552; within it, Oglesby's Brigade lost 184 killed, 603 wounded, and 66 missing, Wallace's Brigade 99 killed, 350 wounded, and 98 missing, and Morrison's Brigade 28 killed, 105 wounded, and 19 missing. Smith's Division had an estimated strength of 7000 and suffered 145 killed, 819 wounded, and 23 missing, for an aggregate of 987; within it, McArthur's Brigade lost 69 killed, 340 wounded, and 20 missing, Cook's Brigade 10 killed, 109 wounded, and 2 missing, Lauman's Brigade 55 killed, 301 wounded, and 1 missing, and Smith's Brigade 11 killed and 69 wounded, for an aggregate of 80. Wallace's Division had an estimated strength of 6500 and suffered 44 killed, 231 wounded, and 18 missing, for an aggregate of 293; within it, Cruft's Brigade lost 35 killed, 182 wounded, and 16 missing, and Thayer's Brigade 9 killed, 39 wounded, and 2 missing. Artillery not brigaded suffered 10 wounded, for an aggregate of 10.