 Complete the following phrase:  Upon his return to the British chain of command in early 2000, he assumed the position of Commander-in-Chief, Land Command, the second-highest position in the British Army, and a post which entailed promotion to full general and membership of the Army Board. As Commander-in-Chief, Jackson was responsible for assembling forces for the 2000 British intervention in Sierra Leone, which included Brigadier David Richardslater Chief of the Defence Staffand Jacksons son Mark. He also handled requests from the civilian authorities for assistance with the 