The first was to have had 350 km/h (190 knots/220 mph) maximum speed, five hours endurance, three machine guns and a bomblets dispenser, armour, and the capability to operate from improvised airfields.

It was rejected by the Regio Esercito and not chosen for production, being capable only of 200 km/h (120 mph; 110 kn), five hours' endurance, climb to 4,000 m (13,000 ft) in 20 minutes, and having three weapons.

However, during WWII, and particularly on the African front, the aeroplane was used in other roles, including tactical support and fighter duty.

With the end of operations, 110 Squadron remained in the theatre, deployed in counterinsurgency tasks and serving as reinforcement for isolated garrisons.

The Ro.37 was generally liked by pilots, and the only complaint was that aircraft was prone to damage to the undercarriage, and had some engine faults.

Ro.37s were also quite widely exported (ten to Uruguay, 16 to Afghanistan, 14 to Hungary, eight to Austria, and one to Ecuador) and about 280 were in service in 1940, in thirty squadrons consisting of 215 aircraft.

Data from Italian Civil and Military Aircraft 1930–1945 [3]General characteristics Performance Armament