2 Hand grenades and extemporized trench mortars were used on both sides with very great effect.
The Japanese hand grenades consisted of about 1 lb of high explosive in a tin case; the Russian cases were of all sorts, including old Chinese shell.
propelled grenades from all sides.
The Japanese employed wire-netting screens to stop the Russian grenades.
concussion grenades were snugly held in his chest webbing.