[3] The Type 2 120 mm mortar was considered an effective and modern design by the Imperial Japanese Army; however, it only saw wide-scale dissenimation during the last of the year.

Initially Japanese trench mortars where primarily developed as chemical-delivery weapons, but would mainly see service in conventional roles during the Greater East Asia War.

The firing mechanism is similar to that used on the Type 99, 81 mm short mortar.

The round uses the standard type 100 mortar fuze and weighs 12 kg (26 lb).

Two rounds of ammunition are packed in a wooden box, lined with asphalt impregnated paper.