The Tenshō Iga War marks Oda Nobunaga's eventual conquest of Iga Province, eliminating the independent Iga ikki during the Sengoku period.
Key Facts
- First attempt (failed)
- 1579, led by Oda Nobukatsu
- Successful conquest
- 1581, by Oda Nobunaga
- Third insurrection
- June 1582, after Honnoji Incident
- Era name
- Tenshō era (1573–1592)
- Opponents
- Iga ikki vs. Oda clan
By the Numbers
Location
Cause → Event → Consequence
During the Sengoku period, Iga Province was governed by the autonomous Iga ikki, a league of local warriors and farmers resisting outside control. Oda Nobunaga's expansionist campaigns across central Japan brought his forces into conflict with this independent confederation, as Iga's self-governance challenged his authority over the region.
In 1579, Oda Nobukatsu led an unsuccessful invasion of Iga Province. Nobunaga himself then launched a successful conquest in 1581, crushing the Iga ikki. A third insurrection arose in June 1582 following Nobunaga's death during the Honnoji Incident, collectively known as the Tenshō Iga War.
The Oda clan's conquest dismantled the Iga ikki's independence, incorporating Iga Province into Nobunaga's domain. The province later became renowned as a home of ninja traditions. The third uprising in 1582 took advantage of the power vacuum left by Nobunaga's assassination, though it ultimately failed to restore the ikki's former autonomy.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Oda Nobunaga, Oda Nobukatsu.
Side B
1 belligerent