Rubuta ci gaba don wannan sakin layi - McNiece ya ci gaba da yin jimlar tsalle-tsalle guda huɗu a lokacin yaƙi, na farko a matsayin wani ɓangare na mamayewar Normandy a 1944. A shekarar da ya yi tsalle a matsayin wani bangare na Operation Market Garden
a cikin Netherlands, wanda aka nuna a cikin littafin (da kuma fim na gaba), "A Bridge Too Far", da kuma a Siege na Bastogne, wani ɓangare na yaƙin Bulge mafi girma. A lokacin yakin da aka yi a Netherlands, an ba shi mukamin sajan kwamitin rushewa. Ya ba da kansa don horar da masu neman hanya, yana tsammanin zai zauna a sauran horon yaƙin a Ingila, amma an kira sandar mai neman hanyarsa ta tsalle zuwa Bastogne don jagorantar sake dawo da kayayyaki. Ya yi tsalle na ƙarshe a shekara ta 1945, kusa da Prüm a Jamus. A matsayin girmamawa ga kwarewar jagorancinsa na halitta, ya ƙare yakin a matsayin mai aiki na farko na kamfanin hedkwatar, 506th Parachute Infantry Regiment. An sallame shi daga aikin soja a watan Fabrairun 1946.