Editing Self-propelled anti-aircraft weapon (section)

===Inter-war period===
{{Unreferenced section|date=November 2024}}
Between the two World Wars, the United Kingdom developed the [[Birch gun]], a general-purpose artillery piece on an armoured tracked chassis capable of maintaining formation with their current tanks over terrain. The gun could be elevated for anti-aircraft use.

[[File:Boworadet Rebellion montage Vickers Type 76.png|thumb|Vickers Armstrong "Type 76" SPAAG loaded onto a train.]]
The first tracked SPAAG-design to be manufactured in series was most likely the British/Siamese Vickers Armstrong "Type 76" (per [[Thai calendar|Buddhist year 2476]] = 1933 CE), as named by the [[Royal Siamese Army]], a SPAAG based on the chassis of the [[Vickers Medium Dragon|Dragon, Medium, Mark IV artillery tractor]] ([[Vickers 6-ton|Vickers Mk.E 6-ton]] light tank derivative), mounting a revolving Vickers 40&nbsp;mm [[QF 2 pounder pom-pom]] autocannon in an open fighting compartment. About 26 were sold to [[Siam]] in 1932 and saw action as infantry support guns and AA guns during the [[Franco-Thai war]] (1940–1941) along with 30 Vickers Mk.E Type B 6-ton tanks. Despite being the first tracked SPAAG en masse, the open-top design of the Vickers Type 76 made it outdated even by the early 1930s.

[[File:Landsverk L-62 Anti.jpg|thumb|Landsverk L-62 Anti-prototype in 1939.]]
The first modern SPAAG to be produced was most likely the Swedish [[40M Nimród|Landsverk L-62 Anti]] in 1936, featuring a tracked armoured body with a revolving turret, a so-called ''anti-aircraft tank''. It was based on a widened chassis of the [[Landsverk L-60]] light tank and was armed with a [[Bofors 40 mm Automatic Gun L/60]] in an open-top revolving turret. The design was bought by Hungary just prior to the war and Finland ordered a refined model in 1941, known as the [[Landsverk L-62 Anti II|Anti II]].

By the late 1930s, the British had developed a version of the [[Light Tank Mark VI|Mk.VI Light Tank]] armed with four machine guns that were known as Light Tank AA Mk.I, and also a twin 15&nbsp;mm version based on the Light Tank Mk.V was built. Among early pre-war pioneers of self-propelled AA guns were the Germans. By the time of the war, they fielded the [[Sd.Kfz. 10|Sd.Kfz. 10/4]] and [[Sd.Kfz. 6|Sd.Kfz. 6/2]], cargo half-tracks mounting single 20&nbsp;mm or 37&nbsp;mm AA guns (respectively). Later in the war similar German half-tracks mounted [[Flakvierling|quadruple 20&nbsp;mm weapons]].