hiː lˈɛd ðə θˈɜːd bɹɪɡˈeɪd æt ðə bˈæɾəlz ʌv tʃˈænsɪlɚzvˌɪl ænd ɡˈɛɾɪsbˌɜːɡ ɪn ɐ dᵻvˈɪʒən kəmˈændᵻd baɪ hɪz kˈʌzən dˈeɪvɪd ɡɹˈɛɡ.
He led the Third Brigade at the battles of Chancellorsville and Gettysburg in a division commanded by his cousin David Gregg.