...and the enemy is coming from here

I need help with a movie quote. I don’t know the exact words but it’s something along the lines of

(said in a frightfully upper-class British accent as the actor points to a map)

I think it might be from Battle of Britain (1969) but I’m not sure.

Does anyone know what the movie is, or what the exact words are?

Whoops, wrong forum

Could someone move this please?

Sorry