Conversation so far:
what did jean-marie le pen do in the military?
After receiving his law diploma, he enlisted in the Foreign Legion.
where did he attend collage?
CANNOTANSWER.
when did he graduate?
He arrived in Indochina after the 1954 battle of Dien Bien Phu, which had been lost by France.
what collage did he attend?
CANNOTANSWER.
what services did he offer?
In 1957, he became the General Secretary of the National Front of Combatants, a veterans' organization.

Question: what battle did he first serve?
Self-contained rewrite: what battle did Jean-Marie Le Pen first serve