Think it was Colonel Richard Kemp:

On October 16, 2009, British Colonel Richard Kemp testified regarding Israel's behaviour in the Gaza Strip during Operation Cast Lead (Israel's invasion of the Gaza Strip in 2008-9 ), as part of the UN's evaluation of the Goldstone Report.  Colonel Kemp, a former commander of British forces in Afghanistan, who served with the UN and NATO, commanded British troops in Northern Ireland, led UK forces in Bosnia and Macedonia, participated in Gulf War 1, spent considerable time in Iraq during Gulf War 2,  and served on the UK's joint international commission on terrorism

I would imagine that he does know what he is talking about, certainly more so than Shaw or Carroll.