I'm a big MacLean fan, and he's my favourite writer.
Some random WED stuff I remember reading:
Burton and MacLean - they were both hard drinkers. One Scottish, one Welsh. They were bound to wind each other up from time to time.
MacLean was an odyssey. No one ever figured the man out. He looked quietly intense, but he was sharp as a fox.
In the hotel during filming - he only visted once, as filmmaking didn't really grab him - he ended up punching and knocking out Burton in the lobby! Meek MacLean versus the might Welsh Burton. I would have loved to have seen Burton's expression. He wouldn't have expected it from MacLean.
The film's producer met with MacLean to see if there were any of his novels available for option. He said no, they'd all been sold already.
The producer asked him if he'd ever consider writing an original screenplay. "I canna write a script, man!" He once said the same thing when asked if he'd ever consider writing a book! (The rest is history). The producer left empty handed.
Less than two weeks later, the producer got a call. There was a scot on the line wanting to talk to him. Alistair MacLean told him he'd finished it. The producer must have been well confused. He'd written a script called The Sloss Adler (yeah, I spelt that wrong). The producer was thrilled, they made it into Where Eagles Dare.
MacLean visted the location filming in Europe. In the hotel lobby, he and Burton got into an argument. MacLean knocked out Burton cold! Burton didn't expect it. They were both drunk.
While the film was being made, MacLean wrote the novel from the screenplay. His genius shines through even more with the additional material in the novel. The best example is the heightened suspense when Burton tries to trick the Nazi's at the table - there's some astounding dialogue and movement that isn't in the script.
He'd write all his novels in 38 days flat, "just to see the bloody things through."
Burton was pretty sozzled through most of the filming. He refused to touch the prop sticks of dynamite, even though they were made of wood.
He substituted a lot of his own scenes by letting Eastwood have them. A perfect example of this is the bike with the sidecar. Burton was supposed to be riding the bike, but he took it easy in the sidecar and let Eastwood drive!
At the premiere of the film, MacLean wanted to bring his mum along, but one of the producers said it wasn't really necessary, as she had nothing to do with the film. MacLean took the piss out of the producer and brought her along to the royal performance.
While in the audience - the Queen was there - halfway through the film, MacLean could be heard every few minutes cursing out aloud: "I dinna kill this many Germans in the script!"
Whether MacLean and Burton hated each other, I don't know. I get the impression that both were difficult people, and with MacLean, he was quite an intense personality.
The ultimate irony is that Burton is buried next to none other than Alistair MacLean in Switzerland!
When Burton and MacLean met, it was Where Egos Dare.
"Stop!!! I've dropped my bloody beer!"