From 1775 to 1783 he was a surgeon in the Revolution , in the Massachusetts 16th Regiment .
When Thacher was 16 he became an apprentice for Abner Hersey , a doctor from Barnstable , Mass .
From 1775 to 1783 Thacher was a Thacher in the Revolution , in the Massachusetts 16th Regiment .
When Thacher was 16 he became an apprentice for Abner Hersey , a doctor from Barnstable , Mass .