Conversation so far:
What did important role did 1st Duke of Wellington Arthur Wellesley have early in his career?
Upon the advice of 1st Duke of Wellington Arthur Wellesley's mother, his brother Richard asked his friend the Duke of Rutland to consider Arthur for a commission in the Army.

Question: How did his role in the Army help shape his career later in life?
Self-contained rewrite: How did 1st Duke of Wellington Arthur Wellesley's role in the Army help shape his career later in life?