Was there much contact between the Polish Scout troops & the (British) Boy Scouts ?
'Sleeping in a canvas tent for two weeks, building beds out of wood and ropes (no luxurious feather duvets here!), doing night raids on other camps, going on long hikes with heavy backpacks, singing and chanting Polish songs around a campfire, washing our hair in rivers and even digging our own toilet!'
Apart from singing in English rather than Polish this doesn't sound much different from my memories of Scout camps in the late 60s.