ðə fˈoːɹθ bɐtˈæliən, bˈʌfs ɹˈɔɪəl ˈiːst kˈɛnt ɹˈɛdʒɪmənt wʌz kwˈɪkli pˈoʊstᵻd ɐwˈeɪ tə twˈɛnti fˈɪfθ bɹɪɡˈeɪd, bˌiːɪŋ ɹᵻplˈeɪst baɪ ðə sˈɛkənd bɐtˈæliən, ɹˈɔɪəl sˈʌsɪks ɹˈɛdʒɪmənt, ɐ ɹˈɛɡjʊlɚɹ ˈɑːɹmi jˈuːnɪt, mˌeɪkɪŋ ðə bɹɪɡˈeɪd ɐn ˈɔːlɹˈɔɪəl sˈʌsɪks fɔːɹmˈeɪʃən.
The 4th Battalion, Buffs (Royal East Kent Regiment) was quickly posted away to 25th Brigade, being replaced by the 2nd Battalion, Royal Sussex Regiment, a Regular Army unit, making the brigade an all-Royal Sussex formation.