Of the five Assault Forces, Hughes-Hallett‘s Force "J" started its training with a decided advantage over the other four; its nucleus having been formed as far back as October 1942, with headquarters at Cowes.
Blandt de fem Assault Forces havde Hughes-Halletts Force "J" en klar fordel i begyndelsen af træningen i forhold til de andre fire, da dens kerne var blevet dannet helt tilbage i oktober 1942, med hovedkvarter ved Cowes.