The US Military doesn't have right to repair

Time was, any company, even the largest, would sacrifice any aspect of their business model in order to get Federal contracts. That was [the only place] where the money was. Right of repair? Source code in escrow? Documentation in Maldrevian? Support for 99 years? Yes Sir whatever you want Sir.

What has changed?

> Service members on the battlefield and in the line of duty were often restricted from accessing repair and maintenance materials for critical military components during life-threatening situations

You've gotta be kidding me!

I know it's a different era and stuff but the "Screamin' Jimmy" 2-stroke diesel [0] from WWII and beyond is a canon of reusable parts and field repair. There are single cylinder up to 24-cylinder(!!!) models which all share common parts.

From [0]: "Bore and stroke are the same across all units, at 4+1⁄4 in × 5 in (108 mm × 127 mm). Inline models were famously "symmetrical," meaning that the blower, exhaust, water manifold, starter, and other components could be mounted on either side of the basic block to fit a particular application. A number of models could also run with the crankshaft turning either clockwise or counter-clockwise, called "Right Hand" or "Left Hand" rotation engines (as viewed from the front of the engine)."

[0] https://en.wikipedia.org/wiki/Detroit_Diesel_Series_71