A British campaign would realy float me boat

. Would love to get me hands on a T Class sub sailing home with the jolly roger flying high:
http://en.wikipedia.org/wiki/British_T_class_submarine
The early variants had 10

forward firing torpedo tubes (six internal and four single shot external), two of the external tubes were moved to fire aft to improve surface sea keeping. There where 53 built suffering about 25% losses. According to the article thay had a tough time in the Med but faired much better in all other theaters of the war.