If I recall correctly there were a few things which went wrong. We had enough force and bravery to overcome them.
There were LOTS of things the went VERY Wrong with this Operation. Chief among others were and COMPLETE Lack of Common Communications between the 2 Ground Elements(Army and Marines). Both services Comm Equipment could not even talk to each other. There were Chain of Command Issues as well. This Operation and other led to the Jointness Concept put forth by Goldwater/Nichols Defense Re-Org Act of 1986.