Gary Smith was most recently the manager of Stevenage in npower League One.
Following the appointment, Smith entered management in English football for the first time after a very successful spell in the MLS with Colorado Rapids.
Smith, a holder of the UEFA A License, spent three and a half years with the Rapids where he achieved notable success by winning the MLS Championship Cup in 2010. He also guided the club to the play-offs in 2011.
He started his coaching with Wimbledon and had spells with Wycombe, where he spent the majority of his playing career, and Watford before joining Arsenal's backroom staff.
It was Arsenal who sent Smith to Colorado, who are owned Stan Kroenke, to strengthen their American coaching links and after impressing he was installed as their head coach.
Smith succeeded Graham Westley at Broadhall Way after he earlier departed to Preston during the 2011/12 campaign. He went onto successfully guide the club to the play-offs that season, where they narrowly missed out on a place at Wembley to Sheffield United.