GCWPC stands for Greenham Common Women's Peace Camp, a peace camp which in the 1980s had women living or spending time at each entrance gate to a US American Airbase that had cruise missiles (nuclear weapons, nukiller weapons) in its silos. Women / Wimmin / Wymn painted each entrance gate in a different color, and in the 1990s just Yellow Gate and Blue Gate were permanent camps. It seems that c. 1986 there was a split. Yellow Gate was the main entrance to the base, and women there are mentioned in other sites (check out Resources above).
How Cruise Missiles Got to Greenham. In the 80s, USA Americans wanted to take Cruise missiles to Europe. They took some to a UK military base without any Parliamentary analysis or consent. In the UK, the pacifist and feminist tradition of social struggle is strong, and people were aware of the danger of nuclear weapons. Different wimmin's groups organized a march. And many concerned people took part. They got to the base and decided to stay there that day. Then they decided to remain one more day, and so on. Camps were born like this. No pre-planned organization.
Bloo. This website is about Blue Gate in those years when numbers of women staying at camp dropped dramatically. When there were enough women at Blue, other camps would open, mostly Woad and Emerald, and sometimes Green or even Orange. Blue Gate was the closest entrance to Newbury, the nearest town, where Quakers shared the bathroom and the washing machine in their Friends' House with the women. In the 1980s Blue Gate was a kind of New Age gate. However, by 1989 it was more like an Anarchist gate: a successfull experience in anarchist-like organization of community life and nonviolent struggle.
Strangely enough, the sites on this nonviolent / civil disobedience feminist (or women's, for some) experience do not include what this sites includes. This might be because they thought the experience was over when instead of tens of thousands there were from three to twenty women at a gate (read chain letter). The assumption that Greenham was over after numbers plummeted is totally wrong. Greenham women were everywhere, supporting the ones that maintained the camps alive and kicking. And this was so till 1994. Actually, the Cruise Missiles left the airbase in the 1990s and the Court Case at the House of Lords, challenging that the airbase was illegal because the land was Common Land was won in the 1990s, too, and that was certainly because there were activists maintaining the protest in many different ways.
Blue Gate was not involved in the Monument iniciative which was developed later on. Many of the Blue/Woad Gat e women are now involved in the Aldermaston Women's Camp(aign)