Lincoln replaced Buell with William Rosecrans; and after the 1862 midterm elections he replaced McClellan with Ambrose Burnside.
lˈɪŋkən ɹᵻplˈeɪst bjˈuːəl wɪð wˈɪljəm ɹˈoʊzkɹənz; ænd ˈæftɚ ðə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti tˈuː mˈɪdtˌɜːm ᵻlˈɛkʃənz hiː ɹᵻplˈeɪst mə klˈɛlən wɪð ˈæmbɹoʊz bˈɜːnsaɪd.