Frederick, Duke of York and Albany (1763-1827), was the second son of King George III of the United Kingdom. He served as a military officer and held the rank of commander-in-chief of the British Army. Frederick was known for his involvement in various military campaigns during the Napoleonic Wars. In addition to his military career, Frederick was also a prominent figure in the royal family. He played a significant role in the establishment of the Royal Military Academy Sandhurst and was involved in various charitable activities. His legacy includes contributions to military reform and education in Britain.