Keichō campaign (1597–98)
Historical term for the second Japanese invasion of Korea (1597–98), part of the larger Bunroku-Keichō campaigns. Often contrasted with 文禄の役 (the first invasion, 1592–93).
See also: 文禄・慶長の役
The Keichō campaign occurred after the Bunroku campaign.
We learned about the Keichō campaign in history class.
Collective term for both invasions (1592–98); 慶長の役 is specifically the later phase.
Named after the Keichō era (1596–1615) during which the campaign took place. 役 means 'campaign' or 'war'.