For anyone who has never seen SECRET ARMY - let me tell you its an absolute BBC masterpice from the 70s -
although I must admit I enjoyed 'allo 'allo too (which was BORN from the very real and serious Secret Army) as a spoof - Its hardly a 'take' on secret army.
Its fascinating to watch these BBC series grow in strength and quality as its success grows - the sets get better and the filming is extended to more expensive locations.
This is an episodes with many nodes running through - It portrays the SS (Kessler) removing priceless paintings from a Belgian Convent after a tip off.
The two American airmen who were shot down decide not to seek a 'friend' from Lifeline as is their usual instruction - they unintentionally capture and kidnap the head of the SS along with his colleague.
Their plan fails as they choose to hide and travel along with a Dutch Bargee - who knows far more than the airmen.
Also in this episode the bargee's wife is taken along with her husband for questioning at Gestapo headquarters, and severe consequences ensue.
As its a series, its difficult to convey the electric atmosphere of this well-researched WW2 drama - focused on 'Lifeline' run by Albert Foiret, its realism even in 2007 - some 30 years on is incredible! Its available of course of DVD - but is often shown as a whole series (2 seasons) on UKDrama.