Werwolf, som var en tysk motståndsrörelse av
stay behind-typ, opererade inom fiendens linjer (alltså inom tyska riket efter det att centralmakten givit upp motståndet) så sent som åtminstonde 1947, förmodligen senare än så.
Citat:
After retreating to the Black Forest and the Harz mountains, the Werwolf continued resisting the occupation until at least 1947, possibly until 1949–50.
Detta bör betecknas såsom stridande förband som utförde krigshandlingar. De bar visserligen ej uniform så på så vis var de illegala kombattanter.
De verkar i vilket fall ha orsakat visst huvudbry för de allierade:
Citat:
Eisenhower believed he would be faced with extensive guerrilla warfare, based on the Alpine Redoubt. The fear of Werwolf activity believed to be mustering around Berchtesgaden in the Alps also led to the switch in U.S. operational targets in the middle of March 1945 away from the drive towards Berlin and instead shifted the thrust towards the south and on linking up with the Russians first. An intelligence report stated "We should ... be prepared to undertake operations in Southern Germany in order to overcome rapidly any organised resistance by the German Armed Forces or by guerrilla movements which may have retreated to the inner zone and to this redoubt". On March 31 Eisenhower told Roosevelt, "I am hopeful of launching operations that should partially prevent a guerrilla control of any large area such as the southern mountain bastions".
Citat tagna från:
https://en.wikipedia.org/wiki/Werwolf
Jag antar dock att det är något annat du syftar på så vi kan betrakta detta som en liten sidoutläggning.