In 1552 - 1554, He took part in the
Battle of Kiyosu Castle against
Oda Nobutomo, deputy governor of southern Owari. In 1556, he defeated
Oda Nobuyuki, who was guilty of treason against his brother
Oda Nobunaga. In 1558, he took over
Suemori Castle. In 1560, he led one of Nobunaga's main forces against
Imagawa Yoshimoto at the
Battle of Okehazama. In 1567, he participated in the
Siege of Inabayama Castle against the
Saitō clan in the first division of Oda Nobunaga's forces, along with
Shibata Katsuie. In 1570, he was active in the
Battle of Anegawa against the
Azai-
Asakura alliance and became the lord of
Inuyama Castle. In 1571, Tsuneoki took part in the burning
Siege of Mount Hiei to subdue the followers of the Ishiyama-Honganji; attacks against the Nagashima Ikkō-ikki. In 1573, he participated in the
Siege of Makishima Castle against
Ashikaga Yoshiaki. Yoshiaki surrendered, and sending Yoshihiro, his eldest son, as a hostage to Nobunaga. In 1574, he entered the mountain fortress of
Ori Castle in eastern Mino to pin-down Akechi Castle after it was taken by
Takeda Katsuyori. In 1575, he fought in the
Battle of Nagashino against the
Takeda clan. In 1577, he took part in the
Battle of Tedorigawa against the
Uesugi clan. In 1580, he beat
Araki Murashige at
Siege of Hanakuma Castle, who locked himself in the castle and was given Murashige's domain at
Settsu Province. In 1582, he led 4000 troops, acted as the spearhead in the right wing, and became the chief vassal of Oda family in
Hashiba Hideyoshi's force at the
Battle of Yamazaki after the
Incident at Honnō-ji, helping defeat
Akechi Mitsuhide. He was also in the conference at
Kiyosu Castle to decide on Nobunaga's successor. In 1583, he assisted Hideyoshi at
Battle of Shizugatake against
Shibata Katsuie and was given 130,000
koku in
Mino Province, and became the lord of
Ōgaki Castle. In 1584, he fought in the
Battle of Komaki and Nagakute on the side of Hideyoshi. He captured
Inuyama Castle on his first assault. ==Death==