The terrifying 23-minute Omaha Beach segment of 'Saving Private Ryan' cost roughly $12 million to put together, or about 20 percent of the film's whole budget, according to director Steven Spielberg's associate producer.

Speaking to the Irish Independent as the film nears its 20th anniversary, 'Saving Private Ryan''s associate producer Mark Huffam said the prep needed to turn Curracloe beach at Ballinesker on the south-east coast of Ireland, was "immense".

"The preparations and planning were immense, and out of the total budget of $65 million [£75.7 million today] there was an estimated $12 million [£13.9 million today] spent filming in Curracloe," Huffam said.

"We had to build a lot of service roads from scratch just to take in the trucks with all the hardware, and we had to construct the battlements, bunkers and attack vantage points. It was the biggest logistical plan of the entire movie," he continued.

The shoot involved roughly 400 crew and more than 1,000 extras and members of the FCA, the Irish military reservists as well as more than 1,000 incredibly realistic dummies. Spielberg and his time decided to employ "between 20 and 30" amputees and people with paraplegia as soldiers who had lost limbs rather than rely on effects in post-production, which Huffam says they took to "with great enthusiasm".