Complex sentence: He was educated at Harrow and trained at the Royal Military College Sandhurst, before being commissioned into the Royal Fusiliers in 1900, he fought in the Boer War and also served in Mauritius, India, and the British expedition to Tibet.
Split into simpler sentences: He was educated at Harrow and trained at the Royal Military College Sandhurst. Before being commissioned into the Royal Fusiliers in 1900, he fought in the Boer War and also served in Mauritius, India, and the British expedition to Tibet.