Possible Clues:

• Last of all, I break clear out of it!
• Unaware of Light Infantry invading plain
• Apt to forget
• Having a palpable exterior left one unconscious
• Not seeing what's visible without first pair of lights?
• Being unaware left one in clear
• Unaware of evident need to accept Chinese measure
• Ignorant learner, one marked externally
• Forgetful; unaware
• Unaware (of)