National League side Aldershot have signed former Forest Green Rovers defender Luke Oliver, while midfielder Sam Hatton has agreed a new deal.
Centre-back Oliver, 31, has had spells with Stevenage, Wycombe and Bradford and made 20 league appearances for Forest Green last season.
Hatton, 27, can also play at full-back and featured 45 times for the Shots in 2014-15, scoring six goals.
Both players have signed one-year contracts with the Hampshire club.
Meanwhile 20-year-old Cheye Alexander has signed for the Shots until summer 2016, having previously joined on non-contract terms from Bishop's Stortford in February.
Find all the latest football transfers on our dedicated page.