In reply to jkarran:
> That makes more sense except for the contact with Russian forces in freezing conditions which occurred in the same (maybe prior?) episode, that doesn't fit with springtime in Belgium/France.
Yep, that is indeed the dis-junction. From memory, all in the same episode:
1) Runs around with a mate in woods in Poland, encounters Russians. Runs away.
2) Meets up with a troop of British soldiers in some woods, and joins them. (Poland, or France/Belgium?)
3) They meet a troop of Germans in the same woods, and his mate gets shot; he runs away. (Poland, or France/Belgium?)
4) He then turns up on the beach of Dunkirk, trying to get on a boat to the UK.
Whether you put 2 and 3 in Poland or in the West (I put them near Dunkirk, owing to 4, and the lack of British troops in Poland) you need a big leap across Germany somewhere between 1 and 4.