ðə dˈeɪt ˌʌndɚ dˈeɪt mˈæsɐmjˌuːn wɜːɹ ɪspˈɛʃəli ɐɡɹˈɛsɪv ænd ɛkspˈænʃənˌɪst, ænd dᵻspˈaɪt ˈɛfɚts baɪ ðə sˈɪkstiːnθ hɚɹˈɛdətˌɛɹi tʃˈiːftən sˈoʊmə jˈɑːʃɪtˌeɪn tə ɹᵻmˈeɪn ɐlˈuːf ʌvðə kˈɑːnflɪkts ʌvðə sˈɛŋɡoʊkˌuː pˈiəɹɪəd, ðə dˈeɪt ɪnvˈeɪdᵻd hɪz dəmˈeɪn ˌɔn θˈɜːɾi əkˈeɪʒənz.
The Date under Date Masamune were especially aggressive and expansionist, and despite efforts by the 16th hereditary chieftain Sōma Yoshitane to remain aloof of the conflicts of the Sengoku period, the Date invaded his domain on 30 occasions.