Operation Herrick superseded two previous efforts in Afghanistan. The first of these was Operation Veritas, which consisted of support during the United States invasion of Afghanistan in October 2001. The last major action of this was a sweep in east Afghanistan by 1,700 Royal Marines during Operation Jacana, which ended in mid-2002. The second was Operation Fingal, which involved leadership and a 2,000 strong contribution for a newly formed ISAF in Kabul after December 2001. Command was subsequently transferred to NATO ally Turkey several months later and the British contingent was scaled back to 300. Since then, all combat operations in Afghanistan have been conducted under Operation Herrick. After 2003, Operation Herrick increased in size and breadth to match ISAF's growing geographical intervention in Afghanistan.