The 'big gun' - History of the First World War The Japanese mastery of Korea: the advance towards the Yalu. Japanese troops proceeding towards Ichon: coolies bearing compressed fodder. - The Japanese mastery of Korea: … Serving a gun in rough weather on board a Japanese battle-ship. Gun assembly 27 mm x 145 : Bordkanone 27 mm x 145 Table 1 Gun assembly 27 mm x 145 : Bordkanone 27 mm x 145 Table 2 Gun assembly 27 mm x 145 : Bordkanone 27 mm x 145 Table 3 Gun assembly 27 mm x 145 : Bordkanone 27 mm x 145 Table 4 Gun assembly 27 mm x 145 : Bordkanone 27 mm x 145 Table 5 Chart 18. Land mines / Rocket gun / chemical cylinders / grenade