Ehud Goldwasser and Eldad Regev were captured by Hezbollah on 12th July 2006 on the Israeli side of the Lebanese border, sparking the two month long Israeli-Lebanese conflict. Gilad Shalit was captured on the Gaza border.
What has happened to them since the conflict ended?
Well, in short, nothing.
On 31st October 2006, Hassan Nasrallah, the Secretary General of Hezbollah, stated that indirect talks with Israel on returning the hostages had begun. However, in violation of UN Resolution 1701, Hezbollah refused to reveal whether the soldiers were alive and refused to receive any letters from the soldiers' families.However on December 6, 2006, a previously classified report stated that the two soldiers were critically wounded during the abduction.
Some background on the soldiers here.
Jewish perspective against a prisoner exchange here
What can you do?
i) Sign the petition to bring them home here.
ii) Don't forget them.