On November 15, 2004, the 25-year-old Peralta deployed to Iraq as a sergeant and scout team leader assigned to Company A, 1st Battalion, 3rd Marine Regiment to clear houses in the Second Battle of Fallujah.
ˌɔn noʊvˈɛmbɚ fˈɪftiːn, tˈuː θˈaʊzənd fˈoːɹ, ðə twˈɛnti fˈaɪvjˈɪɹˈoʊld pəɹˈæltə dᵻplˈɔɪd tʊ ɪɹˈæk æz ɐ sˈɑːɹdʒənt ænd skˈaʊt tˈiːm lˈiːdɚɹ ɐsˈaɪnd tə kˈʌmpəni ˈeɪ, fˈɜːst bɐtˈæliən, θˈɜːd mɚɹˈiːn ɹˈɛdʒɪmənt tə klˈɪɹ hˈaʊzᵻz ɪnðə sˈɛkənd bˈæɾəl ʌv fˈɔːluːdʒə.