Just checked my translation work, and found a few confused things..
In some missions there is no button of a choice of secondary mission:
COASTAL WATERS: SOUTH WESTERN APPROACHES
MARE NOSTRUM: SIEGE OF TOBRUK, MIDDLE EAST SUPPLIES, EAST MEDITERRANEAN CONVOYS
BATTLE OF THE MEDITERRANEAN: EASTERN FLEET, OPERATION PEDESTAL
OPERATION DRUMBEAT: SECOND HAPPY TIME, TANKER ALLEY
THE FINAL YEARS: THE NORTH SEA
Also one more thing confused..
Probably in the ARCTIC CONVOYS campaign signs with missions were swapped..
I think so because mission SOVIET WATERS is to the north of Norway
and mission JW/RA CONVOYS is to the north of Murmansk and Arkhangelsk