I did not know this, from a reader:

And in the original draft of Eisenhower’s farewell address it was “military-industrial-congressional complex,“ indicating the third leg of the tripod. Eisenhower removed “congressional” from the final version it so as not be too uncollegial, but the thought remains and was probably correct. Since then there’s been a lot of ink spilled over the unholy alliance between defense spending and military contractors, but with very little thought put into the necessary role of Congress as the approver of all that. This has distorted the whole point of Eisenhower’s observation and made the phrase nothing more than a convenient stick with which the left can beat up on defense spending, when in fact Ike’s point had as much to do with Congress as anything.