Commando: The Avengers (Commando #5454)

Commandos - on the rampage to wreck Nazi U-boats and U-boat pens, to destroy the sleek deadly killer subs in their secret lairs, plunging the Commando dagger deep into the black heart of Germany. But stop! Among those Commandos was one of German descent - a man who might be a traitor, an explosives expert who with one treacherous touch of a detonator could blow them all to bits.