Historically, howitzers fired a heavy shell in a high-trajectory from a relatively short barrel and their range was limited but they were slightly more mobile than similar size field guns.
Since the end of World War II, howitzers have gained longer barrels and hence increased range to become gun-howitzers.
Wheeled based self-propelled howitzer was a common option when motorised vehicles became a standard for armies, but this shifted to tracked based vehicles.
Few wheeled solutions were used during the cold war, however, they have regained significance in recent years as a cheaper alternative to tracked platforms.
2nd hand: 36 47 20 8×8 truck: 2015 Malaysia interested[32] 2023 2021 2022 (Base vehicle) 2015 [39][40]
2020 — "Artillery Truck Interface" 2021 "Indian Field Gun"
2014 Recoil system derived from American Hawkeye 105 mm[46] "Multi-terrain Artillery Gun Ultra Lightweight howitzer" Bharat Forge Ltd
"Kamyona Monteli Obus" 2017 / Program cancelled 2017 8×8 truck: 2025 "Fire Support Vehicle" BAE Systems 2016 Known as "Deacon" Park Royal Vehicles
some received 2nd hand "Howitzer Motor Carriage" Diamond T