Knowlton served with the 10th Mountain Division (ski troops) in the Aleutian Islands and Italy during World War II.
Vhanna vha ambara kilts (zwi tshi khou humela murahu kha u dzhenelela ha ma Pedi a dzi Allies kha nndwa ya lifhasi ya vhuvhili) na zwithu zwa sialala zwa regalia.