continues: In the dark days of 1940, the unit grew to about 6,000 members, who knew little of each other and operated in small guerrilla groups. Recruited to disrupt a German occupation force – including roles such as blowing up tanks, lorry parks and communications – the teams prepared by carrying out covert missions, known as “scallywagging”, at night. (more at source)

Sounds like they would be called "terrorists" today, by an "occupying force."

There must be an invasion in the offing here. Liverpool is full of scallies.