Anyone going hunting with Dick Cheney after what he did to his partner is either massively brave or insanely stupid . . . and Liz Cheney has never demonstrated much bravery.
Trump said let's see how much of a warhawk she would be if she had to go on the battlefield. Do you really think he'd be able to draft her and put her in the military? Do you think Trump would even want her in the military, ruining morale?
He was referring to political war Hawks like Liz Cheney, would be far less inclined to want to wage war if it was their asses getting shot at. Soliders have been saying this exact thing for generations.
That is exactly what he was saying, If you listen he mentions "war hawks " a few times. Even at a rebuttal, he brought up war hawks being willing to sacrifice men and women at a drop of a hat but never their selves.