Unions are rotten groups of thugs it seems. The USA had to deal with their shenanigans in World War II, contrary to the history that the US was completey united then.
The Roosevelt socialists wrote the post war narrative and created the myth that all was well and that the united and patriotic workers of America made it all possible to create the arsenal of democracy. The winners write the history.
In reality industrialists led by William Knudsen, former President of Chevrolet Division of General Motors, made much of it happen in spite of the labor leaders. Many many times industrial leaders had to step in to break the union and encourage workers to produce the goods needed for war.