Yi Sun-sin

Every entry, with its source

At 0

1. Apr 28, 1545

   Born in Geoncheon-dong, Hanseong (now Seoul)

   Date converted to the Gregorian calendar.

   Source: en.wikipedia.org

At 27

1. c. 1572

   Falls off a horse in the military exam and fails

   Around age 27. He is said to have splinted his broken leg with willow bark and finished.

   Source: en.wikipedia.org

At 30

1. Feb 1576

   Passes the military exam

   Age 30. An unusually late age to pass.

   Source: en.wikipedia.org

At 42

1. c. 1587

   First demotion to the ranks, blamed for Nokdun Island

   Around age 42.

   Source: en.wikipedia.org

At 45

1. Feb 1591

   Made naval commander of Jeolla Left Province

   Age 45. A year before the war. Work begins on the turtle ships.

   Source: en.wikipedia.org

At 47

1. Jun 1592

   Battle of Okpo, his first victory

   Age 47. One month after the Japanese invasion began.

   Source: en.wikipedia.org
2. Aug 1592

   Great victory at Hansan Island

   Age 47. The crane-wing formation.

   Source: en.wikipedia.org

At 48

1. Aug 1593

   Made naval commander of the three provinces

   Age 48.

   Source: en.wikipedia.org

At 51

1. Apr 1597

   Stripped of rank, jailed, demoted to the ranks again

   Age 51.

   Source: en.wikipedia.org

At 52

1. Aug 1597

   Back as commander, with 12 ships left

   Age 52.

   Source: en.wikipedia.org
2. Oct 1597

   Battle of Myeongnyang: 13 ships beat 133

   Age 52.

   Source: en.wikipedia.org

At 53

1. Dec 16, 1598

   Killed in action at the Battle of Noryang

   Age 53. The last battle of the war.

   Source: en.wikipedia.org