Story highlights Mattis is expected to be greeted on the steps of the Pentagon by Gen. Joseph Dunford

The two men have served side by side on multiple deployments

(CNN) Defense Secretary James Mattis is quickly taking charge of a Pentagon review to determine specific options to propose to President Donald Trump to accelerate the war against ISIS. Some initial ideas could be presented possibly as soon as this week, according to defense officials.

With Trump scheduled to visit the Pentagon on Friday, Mattis, along with Joint Chiefs of Staff Chairman Gen. Joseph Dunford, will be reviewing potential options that could be presented to the President. That internal review will incorporate military advice from both Dunford and Gen. Joseph Votel, the head of the US Central Command.

The Defense Department is responding to Trump's campaign pledge that he would ask military leaders for a plan within 30 days of taking office on how to defeat ISIS, something the President mention in his inaugural address. During the campaign, Trump said he had a secret plan to destroy ISIS that appeared to involve cooperation with Russia but details were never made public.

Now, with Mattis on board, the Pentagon has a leader who can accomplish trying to get more details from the White House on exactly what it wants to accomplish and on what timetable.

Officials described two scenarios: One is to "pull" more information from the White House on how it wants to proceed. The other is to "push" to Trump some existing options that Barack Obama never approved when he was in the White House. These options have been developed with enough detail that the President could quickly sign new presidential authority orders to start the process rolling, although it could take weeks and months to see an impact on the battlefield.

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