What is "l-groups"

The L-groups ( Danish: L-gruppe) was a resistance group tasked with assassination of Danish collaborators and German forces occupying Denmark during the Second World War. The precursor to the group was established in 1940 but it was most active from 1944 to the end of the war. The group carried out at least 18 assassination operations and killed between 20 and 30 people. In 1945 the group was hard hit by arrests and killings of its members and further suffered a very high death-rate in the years immediately after the war with suicides and accidents killing a number of members. The group had strong ties to the Danish police with 5 of its members being police officers.