The words on the blackboard -- "fig ht to the finish" and "special forces spirit" --the teacher's grave expression and the straight-backed posture of the students all show that the picture dates from the latter part of the Second World War.
、「堅持特攻精神」字樣，與台上面色凝重的老師，台下正襟危坐的學生… …，顯示時間已到二次大戰末期。排排坐，照畢業照。