On Tuesday, the Pentagon's senior enlisted member, Army Command Sgt. Maj. John Wayne Troxell, issued a thunderous message meant for Islamic State: "Surrender or die!"

Troxell, whose job entails serving as the voice for enlisted service members at the Pentagon, wrote:

ISIS needs to understand that the Joint Force is on orders to annihilate them. So, they have two options should they decide to come up against the United States, our allies and partners: surrender or die!

If they surrender, we will safeguard them to their detainee facility cell, provide them chow, a cot and due process.

HOWEVER, if they choose not to surrender, then we will kill them with extreme prejudice, whether that be through security force assistance, by dropping bombs on them, shooting them in the face, or beating them to death with our entrenching tools.

Regardless, they cannot win, so they need to choose how it's going to be.

Accompanying the Facebook post was a photo of an entrenchment tool — a collapsible shovel used by the U.S. military. The post included the hashtag #ISIS_SurrenderOrDie.

Troxell also expressed his sentiments on Twitter:

As Fox News reports, last month Troxell visited the troops in Afghanistan on a United Services Organization holiday tour where he told the troops that Islamic State will be “annihilated, period!”

He added:

That may be through advising, assisting and enabling the host-nation partners, It may be by dropping bombs on them. It may be by shooting them in the face. And it even might be beating them to death with your entrenching tool, but we are going to beat this enemy!

Air Force Col. Patrick Ryder told The Washington Post, “His intent was to communicate the tenacity of the warrior ethos that, even when faced with the brutal and unforgiving nature of combat, will use every resource available to fight and win.”