Fellowship of Reconciliation
Veterans for Peace
These three groups have come up repeatedly in my research into the background of the VVAW. All three are named as Communist front groups in FBI/HUAC/SISS files. The other groups are more recent and I'm not as familiar with some of them, but one I am familiar with is Pax Christi, which is linked to Thomas Gumbleton and Ramsey Clark and their campaign against the UN sanctions against Iraq in the 1990s.
ping!
I think Pax Christi is a group the sanctions busting French Priest, Father Benjamin, was associated with. He was a oil vouchers recipient and pal of Tariq Aziz.