Burnside, against presidential advice, launched an offensive across the Rappahannock River and was defeated by Lee at Fredericksburg in December.
bˈɜːnsaɪd, ɐɡˈɛnst pɹˌɛzɪdˈɛnʃəl ɐdvˈaɪs, lˈɑːntʃt ɐn əfˈɛnsɪv əkɹˌɑːs ðə ɹˈæpɐhˌænək ɹˈɪvɚ ænd wʌz dᵻfˈiːɾᵻd baɪ lˈiː æt fɹˈɛdɚɹˌɪksbɜːɡ ɪn dᵻsˈɛmbɚ.