From the BBC:

Israel soldiers speak out on Gaza

Soldier testimonies appear to contradict official Israeli statements

A group of soldiers who took part in Israel's assault in Gaza say widespread abuses were committed against civilians under "permissive" rules of engagement.

The troops said they had been urged to fire on any building or person that seemed suspicious and said civilians were sometimes used as human shields.

Breaking the Silence, a campaign group made up of Israeli soldiers, gathered anonymous accounts from 26 soldiers. ...

Many of the testimonies are in line with claims made by human-rights organisations that Israeli military action in Gaza was indiscriminate and disproportionate.

Amnesty International has accused both Israel and Hamas of committing war crimes during the 22-day conflict.

The full Breaking the Silence report is here.

See also here.

This is a Dutch TV video (in Hebrew, with English subtitles) of interviews with Israeli soldiers who were involved in the "Cast Lead" invasion in Gaza.