Complex sentence: By virtue that the 37 mm guns were described as rapid fire, these were most likely the dual-purpose Type 94 anti-tank gun which was a rapid-fire gun, as distinct from the earlier Type 11 37 mm infantry gun.
Split into simpler sentences: By virtue that the 37 mm guns were described as rapid fire, these were most likely the dual-purpose Type 94 gun. The Type 94 37 mm anti-tank gun was a rapid-fire gun, as distinct from the earlier Type 11 37 mm infantry gun.