Father You Were Strong - (父よ貴方は強かった) - English Lyrics [軍歌] 

Thanks to lyrics from Lyrictranslate. Lyrics available in Japanese, English and Romanised Japanese (Romaji). Quick amendment, at 2:19, where is says : "戦"(sen), the furigana is supposed to be いくさ (ikusa). The romanised text below shows "sen", it's meant to be 'ikusa'.