Courage is not simply one of the virtues,

     but the form of every virtue ,

               At the testing point. 

Soon after Lewis entered Oxford in the 1917

  He joined the Officers' Training Corps at the university as his "most promising route into the army". 

 He was commissioned into the Third Battalion of the Somerset Light Infantry of the British Army as a Second Lieutenant.

On his nineteenth birthday he arrived at the front line in the Somme Valley in France,  On 15 April 1918,

Lewis was wounded and two of his colleagues were killed  

I have found a desire within myself ,  

 That no experience in this world can satisfy;

  The most probable explanation is that I was made for another ,World.

C. S. Lewis