MBT-70. TO&E is conjecture to a degree for this tank. 3 platoons of 5 tanks, with 3 tanks in the Co command element. Or use the Abrams TO&E for 3 platoons of 4 tanks with CO and XO. Would the tank keep the 152mm gun? Keep tank round and missile? Or change to 120mm? Any questions please direct Jim’s way. He is certainly more knowledgeable than I.
TOE is a guess. If fielded in '75, most likely H series - 5 tanks per platoon, 3 platoons and a 2-tank co hq for 17 tanks in a company. 3 companies and 3 tanks for bn hq. 54 tanks total.
The J series was still in development. Several different aspects had to come together to see the J series. The first was refining AirLand Battle. The second was development of a suite of vehicles, including the M1tank , which, as we know, came about from the failure of MBT70, the M2/3 Bradley, the Apache attack helicopter, and Hellfire AT missile. These systems made AirLand Battle possible, and AirLand Battle integrated these systems into an effective fighting force capable of taking the fight against a numerically superior foe on the offense.
There were several difficulties with MBT70/XM803. The system was complex and failure prone, as it was fircing the technology. Despite the auto-loader, the main gun required, in combat terms, a longer cycle time than a human loader (If you read the '73 War books, you see that cycle time was critical and an advantage to the Israelis). The turret-located driver suffered frequent disorientation as his individual turret remained oriented to the hull when the turret was traversed. The Germans had already started looking at mounting a 120mm gun (no missile) on their version when the project was cancelled. The 120mm would have solved almost all the tech problems. I'm not sure there was space to put the driver in the hull, so that difficulty would likely have remained. Switching to the 120 would have significantly reduced the cost. Simplifying the secondary weapon as on XM803 (50cal commander's station rather than the separate pop-up 20mm or 25mm, as eventually intended) would also have reduced cost and maintenance. And the HS 20mm was notoriously unreliable.
So, if MBT70 or XM803 was fielded with some changes, it might not have been fielded until the late 70s. By then, planners were moving to the J series. Work on the M1 might not have started until later, although the development of Chobham armor might have given some impetus to a new design. You might have seen XM803s in 4-tank platoons, 14-tank companies, and 4-company battalions at that point.
Mike Robel would not be happy about giving up the 152mm launcher, as he thought the 152mm sabot round was pie in the sky. With that round, I don'feel we would have needed the Shillelegh, so again, the system could have been simplified. Still, some systems would have remained that hadn't really matured, Making the tank useable in the field would have involved more money and Congress was not inclined to sink more money in that mudhole.
So when you get some MBT70s, you are obviously free to organize them however you want. Since they are what-ifs, I feel I can do that. I like 5-tank platoons, 4 companies per battalion, although, at the moment, I only have 3 companies in my battalions (until I can print more)
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Here is a Leopard 2 I picked up from someone, he had a barrel glued into a notch on bottom of turret. I could not create a hole I wanted so I cut into turret, then made a hole for the styrene. Build up some glue, have more work to do. We have a plan.