At Brest, British and French teams wrecked harbor facilities after the main embarkation, and HMS Broke removed the demolition party on 19 June. The specialists had arrived with the evacuation force, and the Royal Navy kept several such parties ready. Their task was to deny a functioning port to the advancing Germans after the troops and ships had departed. Their presence points to prepared withdrawal planning that combined personnel recovery with infrastructure denial.
Notable Point · 59:29-1:00:58
Brest demolition parties show prior preparation
The evacuation ships arriving with demolition specialists show that Aerial involved denying port infrastructure as well as lifting troops.