Kalran: Tales of the four nations/Ewell "lightning"

"Armored transport here!"

-A defender leaving the Motor Pool

Tactical analysis

 * Still a contender: Despite being a relic compared to the other battalions the defender still holds the heaviest armor for an MBT. While its simplistic design means it can be built from a Motor pool, and while its cannons lacks the punch to break modern armor its canister rounds its given can rip apart infantry and aircraft
 * Backseat drivers: Despite the its shortcoming it has a secret weapon. Two squads can ride inside the tank and cover it from its firing ports. Giving it flexibility, especially with the battalions focus on infantry
 * Showing its age: But in the end its weakness is still visible. Its cannons are still outdated and won't pierce the armor of tanks or heavy aircraft. And while fast for its size and armor the turret traverse and turn speed are awful and risk the tank getting flanked. But its simpler design means that the crew, unlike other tanks, survives in the event its destroyed, its passengers might not be so lucky
 * Now that's a cannon: In order to increase the tanks efficiency further a few experimental models have been made with an even better engine and trading its aging cannons for a faster firing autocannon chaingun, with high explosive shells, and a stun rocket

Ace upgrade
Increase speed and change and grapeshot rounds dual cannons to rotary autocannon and high-explosive, increasing rate of fire, and gains a stun rocket, which damages and stuns vehicles.