Kammala jumla mai zuwa: Waller ya bi mahaifinsa ta hanyar zama soja mai sana'a kuma a shekara ta 1617, ya shiga rundunar sojojin Jamhuriyar Venetian, inda ya sadu da shugaban sojojin Ingila, Sir Horace Vere. A shekara ta 1620, shi da Sir Ralph Hopton sun kasance membobin masu tsaron lafiyar Elizabeth, Sarauniya na Bohemia, 'yar'uwar Charles I na gaba. Bayan da mijinta Frederick ya ci nasara a
White Mountain a watan Nuwamba, sun raka ta zuwa Frankfurt.