The Ruathar Fast Tank was an armoured vehicle of the SDF-Army in service from 1933 to 1955, when it was replaced by the larger Cosaint MBT. Starting in 1940, they were supplemented by the Dobhareach Amphibious Tracked Vehicle and, from 1950, replaced by the Mealltach Reconnaissance Tank.
Nowadays, there are a few surviving examples, for example with the Historic Fleet of the Iris Boarding School Complex Sensha-Do Team. Their four Ruathars are in full operational condition and have been used during movie shoots in the past. Another example stands in the Museum of Armoured Warfare in Maleth as well as one in the Streitkräftemuseum Elms in Teressien.
Designed to supplement the tankettes, which had been in service since the Mid-1920s (chiefly among them the Colúr-Tankette, which had been in service since 1927), the Ruathar was mostly designed to kill tankettes and other tankette-killers,
The SDF experimented a lot with the Ruathar-Hull, a few of these variants seeing active service with the Army. The most well-known version is the Ruathar-AA, armed with at first one, then two and in the latest iteration four Gabha G-36 20mm Guns instead of the turret. This variant was known as the Gráinneog, or hedgehog.
|Model||Role||Main Armament||Engine||Introduced||Other Differences|
|Mark I||Gabha G-18 47mm Anti-Tank Gun||12 cylinder 300 PS Diesel||1933|
|Mark II||Gabha G-18 47mm Anti-Tank Gun||12 cylinder 300 PS Diesel||1939|
|Mark III||Gabha G-80 76mm Gun||12 cylinder 300 PS Diesel||1944|
|Mark IV||Gabha G-80 76mm Gun||12 cylinder 300 PS Diesel||1950|
|Gráinneog||SPAAG||4x Gabha G-36 20mm Guns||12 cylinder 300 PS Diesel||1938|