Prince William has shared throw back images of his time in the military ahead of taking on a new role. King Charles is officially handing over the role of Colonel-in-Chief of the Army Air Corps to Prince William later today. William smiles brightly dressed in military uniform in a post on the Prince and Princess of Wales’s official Instagram account. The post reads: “Time flies! Looking back at the last two visits to @ArmyAirCorps in 1999 and 2008 ahead of today’s handover at Middle Wallop.” In one image, the prince stands with his arms crossed in front of a helicopter and the other, William s…