Conversation so far:
Was Coppi in WWII?
Coppi joined the army as soldier 7,375 of the 38th Infantry when Italy entered World War II.
How was his experience in the war?
but in March 1943 they sent him to North Africa.
What happened in Africa?
There he was taken prisoner by the British between Mateur and Medjez-el-Bab on 13 April 1943.

Question: What happened while he was a prisoner?
Self-contained rewrite: What happened while Coppi was a prisoner?