Polish Scouting and Guiding Association (ZHP)
When the Second World War broke out, many ZHP leaders left the country to continue Guiding/Scouting activity among émigré youth. The Guiding/Scouting communities which remained in the Nazi-occupied country formed an underground organisation linked to the Home Army. "Trefoil Union" was one of the underground cryptonyms of the Guide Association and became well known, earning high respect from Polish society. Guides helped the weak, the poor, the homeless and children in need in different ways, and they participated in the Resistance Movement all over Poland. Polish Scouts continued their duty underground under the name of "Grey Ranks". Depending on the age they helped in distributing underground press, organised mail service and undertook many other tasks including armed fighting.