While not explicit, there is a passing reference to a soldier and a nurse being intimate with one another nearby where Lewis, as a soldier convalescing after an illness, was located.

Lewis discusses his sexual attraction to the preparatory school's dancing instructor when he was a young teen.

A war scene shows gunfire and wounded men.

Multiple scenes where a young CS Lewis puts an unlit cigarette in his mouth.

Multiple scenes where characters are seen drinking

There is a short scene where Lewis confesses an early fascination with the occult, though he does not endorse that interest and describes the danger of pursuing such a course.

There is a war scene with gun fire and explosions that last a few minutes. Men are seen on the ground after, but no graphic wounds are shown.