With the aid of a German deserter, Paul Mulbach, they apparently had some success in turning the soldiers of the garrison against their masters, including most notably the highest military authority in the Islands, Huffmeier.
There is some evidence to suggest that they had even set a date for this mutiny (1 May 1945), but that it was rendered pointless by the suicide of Adolf Hitler.
Peter Tabb suggests that they were involved in the blowing up of the Palace Hotel and of separate ammo dumps, in fact it is more likely that their involvement was to set fire to the hotel, and the German efforts to put out the subsequent blaze, by using dynamite to create a breach between the flames were misjudged and set off charges in a neighbouring ammo dump.
In 1966, Le Brocq and 19 other islanders were awarded gold watches by the Soviet Union as a sign of gratitude for their role in the resistance movement.
There was also a Communist Party of Guernsey [zh] which was based in 6 Burnt Lane in Saint Peter Port which was lead by Robert G. Hale in 1948.