Rubuta ci gaba ga wannan sakin layi - Rooney ya fara aikinsa a jaridu a 1942 yayin da yake cikin Sojoji inda ya fara rubuta "Stars and Stripes" a London. Ya kasance daya daga cikin 'yan jarida shida da suka tashi a karo na biyu na bam din Amurka a kan Jamus a watan Fabrairun 1943, yana tashi tare da Sojojin Sama na Takwas. Shi ne dan jarida na farko da ya kai gadar Ludendorff
bayan da 9th Armored Division ya kama shi a ranar 7 ga Maris, 1945. Ya kasance a yamma lokacin da ya ji cewa an kama gada. Ya rubuta, "Mafarkin ɗan jarida ne". "Ɗaya daga cikin manyan labaran yaƙin ya faɗi a kafaɗata". Kama gadar ya kasance labari na farko a Amurka. Rooney ya kimanta kama gadar a matsayin daya daga cikin manyan abubuwa biyar na yakin Turai baki daya, tare da D-Day.