Type 41 75mm Regimental Gun

The Type 41 75mm mountain gun was accepted in 1908 (the 41st year of Emperor Meji's reign, which gives it its Type 41 name), originally a license-build copy of the German Krupp M.08 mountain gun. From 1934, when the new Type 94 75mm mountain gun was accepted, the Type 41 gun become an infantry regimental gun (Rentai Ho). Every infantry regiment was equipped with four Type 41 75mm guns, hence a triangular division as the IJA 23th Infantry Division had twelve guns.

Type 41 75mm mountain gun (commons.wikimedia.org).

Type 94 37mm Rapid-fire Gun

The Type 94 Rapid fire gun was an anti-tank and infantry support gun designed in 1934 (2594 in the Japanese imperial year, from where it takes its type "94"). It was the main Japanese anti-tank gun until the development of the Type 1 47mm Anti-Tank gun in 1941. However the Type 94 gun remained active in all the fronts through the end of the war, as the new Type 1 could not be produced fast enough.

Japanese Type 94 37mm anti-tank Gun abandoned in Guadalcanal, 1942 (ww2db).

Type 92 70mm Battalion Gun

The Type 92 Battalion Gun was a light howitzer introduced in 1932 (2592 in the Japanese imperial year, from where it takes its type "92"). Since every infantry battalion was equipped with two Type 92 guns, it was named Battalion Artillery (Daitaihō), and therefore a triangular division as the IJA 23th Division was equipped with eighteen Type 92 guns.

Type 92 70mm gun (www.historicalfireamrs.info)

Type 3 Heavy Machine Gun

The Type 3 Heavy Machine Gun (also known as the Taishō 14 Machine Gun) was the first Japanese machine gun to be domestically designed. It appeared in 1914, designed by General Kijiro Nambu, and was based on the french Hotchkiss M1914.

Type 3 Heavy Machine Gun (worldofweapons.blogspot.com).

Some differences with the Hotchkiss model were the feed, the fire controls and the locking system. It also modified the caliber, as the French one used 8mm cartridges and the Japanese used their then standard 6.5x50mm Arisaka ammunition.