Here is what the Japanese 70mm infantry howitzer looked like. The Marine Corps Museum had a captured one on display.

The howitzer is used with Japanese infantry battalions; ordinarily horse-drawn but it can be manhandled easily by the 10-man section; it can be placed in position by two men; three men can handle it on a good road. The piece is mounted on a cradle which houses the hydro-spring recoil mechanism. It has a steel split-trail carriage mounted on steel disk wheels. The general characteristics follow (see accompanying sketch).
Caliber 70 mm (2.76 in)
Length Overall, with tails folded 87 inches
Tube 2 feet, 6 inches
Weight (complete) 468 lbs
Rifling 24 lands and grooves (r/h twist)
Maximum range 3,000 yards
Effective range 1,500 yards
Muzzle velocity 650 f/s
Ammunition HE, smoke and shrapnel
Weight of shell (HE) 8.36 lbs
Rate of fire 10 rpm
Tube Monobloc
Breech block Interrupted thread type
Firing mechanism Continuous pull
Recoil Hydro spring
Elevation 50°
Depression -10°
Traverse 45° ea.ch way
Sight Panoramic
Shield 1/8 in armor
The source is TACTICAL AND TECHNICAL TRENDS NUMBER 34 23 SEPTEMBER 1943
The US had by then a few captured ones to evaluate. It was a useful little gun.