Four types
Contrary to common belief there were four types of wound badge 1913 type, 1920 type, 1924 type and 1938 type (not just 1913 and 1938 type).
And not only every type has two variations or classes (Sensho variation (or Sen’Sho) – badge for wounds in battle (higher class) and Kosho variation (or Ko’Sho or Kousho) – badge for wounds in public service (lower class)), but different types of badges were intended for different ranks. Yep. Kinda tricky.
First type has been created in March of 1913 and was strictly limited to privates and NCOs (EM). No officers were allowed… This badge had two variations (Sensho and Kosho).
Second type had two sub-types – one intended for ET and another for officers. In turn each sub-type had two variations (Sensho and Kosho).
Third type again had two sub-types – one for ET and another for officers. In turn each sub-type had two variations (Sensho and Kosho).
Fourth type was most unified. One badge for all ranks in two variations (Sensho and Kosho).
Here comes the summary of this mess.