Reminds me of a movie (comedy) "How I started WW2"

It's WW2 and a Polish soldier is sent to a British camp(to work with them).

Night comes and the British soldiers are outside drinking tea and talking over the weather (sh!t you not) ,the Polish soldier notices some strange activity (spies trying to attack) he hides in his tent with a pistol pointed towards the opening until a spy pops his head in for a few seconds in an awkward stare before he runs off, the Polak still thinks they are there, so he checks one the tents and sees the commander(or general I dunno)

and knocks him out with a tea kettle (mistaking the general for a spy), so he then dresses in his uniform and walks past the other soldiers,

"Excuse me sir? would you like to have a talk over some tea?" the Polish says nothing (not even pausing to respond).

"That's strange" says one of the soldiers, "He denied our tea" said another. "He didn't like our tea? It's a German spy!"