This rule is part of the Axis & Allies Global 1940 2E, House Rules Expansion.
The Escort unit is a sea unit, that has multiple tasks. The primary task is to protect Transports as part of a Convoy.
@Der:
Yeah I guess I should have stuck with the more generic term “troopship” - although the Lusitania was a liner that went down. All ships were vulnerable at certain places and times.
Lusitania, a civilian ship, was sunk in 1915.
Struck by one torpedo, it exploded and sunk because there was ammunitions on board.
Also, it was slow because half engines were temporarily not operational due to a coal shortage.
Not a good case for fast, military, troopship.
SS Athenia was sunk in 1939.
It was the beginning of WW2.
It was not equipped then and speed was only 15 knots.
But still, a U-boat U-30 was able to sink her.