Prince William, the Duke of Cambridge, is the eldest son of Prince Charles, the Prince of Wales. William happens to be the second in the line of succession to the throne, after his father. William was involved in philanthropy since a very early age and used to spend his gap years doing humanitarian work in Chile and some African countries. Initially, William wanted to be an army officer and underwent training for the same. He successfully finished his course at the Royal Military Academy Sandhurst and was subsequently commissioned as a second lieutenant. Later, as his interest shifted towards Royal Airforce service, William served his country as a Flight Lieutenant. For some time, William took on the full time duties as an Air ambulance pilot at the Eastern Anglian Air Ambulance, for which he went through intense training. Serving his duties as the eldest son of Prince of Wales, William got appointed as the Counsellor of State. He embarked on a Wales tour with his father and sometime later, did a solo tour. He also happens to be an avid philanthropist and has been involved with many organizations to provide healthcare, food and safety to the less privileged. Right before his marriage to Catherine Middleton, he was honoured with the title the Duke of Cambridge, Earl of Strathearn and Baron Carrickfergus.