(sorry about that pun)
Compared to Great Britain (which continued to seriously develop tanks and armored cars after WWI, both for the military and for overseas sale) the United States pretty much gave up on the production of tanks and armored cars after 1920. The only tanks or armored cars available, in any quantity were the two following tanks. I'll cover the various experimental armored vehicles produced in small quantities as well as the Ford 3-ton tank (really a Tankette and then only 15 completed) in a future blog, maybe (good luck in finding models of those tanks or armored cars).
A joint US/British design, 100 of the Liberty Tanks were produced in 1919 and 1920. As you can see by the pictures above and below, this was a large improved version of the WWI British Rhomboid Tank.
Weight 37 tons
Length 34ft 2 inches
Width 12 ft 4 inches (9 feet when the sponsons were retracted for transport, but it will need time to put them back in their proper place)
Height 10 ft 3 inches
Crew 10 men (originally 12 it was reduced when the two side Browning MGs were deleted, which was done before 1932)
55 mile range
A blazing 5.25 MPH speed
Armament: two 6 pounders
three (earlier five) .30 caliber Brownings
A somewhat better tank than the earlier Marks of British tanks, it still suffered from overheating and poor reliability. The 100 built equipped a single unit, the 67th Infantry (Tank) Regiment, based in Aberdeen, Maryland. The curious designation of the unit had its origin in the fact that since 1922 by law all tanks had to be part of the Infantry. In the real world, the military started to phase them out in 1932 and all were in storage by 1934. In the VACW world, this was the only heavy tank the Army had and they would have had to use them. Almost all would be in the hands of MacArthur's Army, though some might have been captured by his enemies during shipment by rail or loaned to factions "allied" to his.
Models in 28mm
No one makes this tank specifically, but it was used as the design for the tank in "Indiana Jones and the Last Crusade" (minus the superstructure and with a turret placed on top). Toys from that movie could be modified to make a fair model of the real tank, as could Copplestone's Mark IX Beast Super-Heavy Tank (I hope that Copplestone makes a real Liberty Tank version someday, but I'm not holding my breath).
Basically a near copy of the French Renault FT-17 thousands were ordered by the US Army, but only about 950 were delivered after the war was over. 374 had cannons, 526 had machine guns, and 50 were signal (wireless) tanks. These were complemented about 200 Renault FTs brought back from France.
Weight: 6.4 Tons
Length: 5 m
Height: 2.3 m
Armament: 37mm cannon or .30 Browning (remember that is that low velocity 37mm trench gun,
not a 37mm AT gun)
Range: 30 miles
Speed: 5.5 MPH
With so many out there almost any faction could have access to these. About 500 where still in running condition in 1940 and were supplied to the Canadians as training vehicles, so they had to have been somewhat reliable.