Hey sorry for a long wait I had a lot of things and mini project going on so I thought I would post something so here it is a M3 Lee. Also I tried my best to make it historically accurate

In 1939, the U.S. Army possessed approximately 400 tanks, mostly M2 Light Tanks, with 18 of the to-be-discontinued M2 Medium Tanks as the only ones considered "modern". The U.S. funded tank development poorly during the interwar years, and had little experience in design as well as poor doctrine to guide design efforts.
The M2 Medium Tank was typical of armored fighting vehicles (AFVs) many nations produced in 1939. When the U.S. entered the war, the M2 design was already obsolete with a 37 mm gun, an impractical number of secondary machine guns, a very high silhouette, and 32 mm frontal armor. The Panzer III and Panzer IV's success in the French campaign led the U.S. Army to immediately order a new medium tank armed with a 75 mm gun in a turret as a response. This would be the M4 Sherman. Until the Sherman reached production, an interim design with a 75 mm gun was urgently needed.

The M3 was the solution. The design was unusual because the main weapon – a larger caliber, medium-velocity 75 mm gun – was in an offset sponson mounted in the hull with limited traverse. The sponson mount was necessary because, at the time, American tank plants did not have the design experience necessary to make a gun turret capable of holding a 75 mm weapon. A small turret with a lighter, high-velocity 37 mm gun sat on top of the tall hull. A small cupola on top of the turret held a machine gun.

————Manual————
Ag1- 75mm Cannon Control
Ag2- 37mm cannon control
VTOL- vertical drive for both guns
Trim- Horizontal Drive for both guns
Pitch- to move backwards and forwards
Roll- to turn the tank

P.S.
Credit to pancelvonat and Wikipedia
Here’s the link to the original https://www.simpleplanes.com/a/P7N1Dl/1941USVehicles_Pack