After successfully dodging bullets like a football player, what did Henry [and Wilson] grab with stalwart pride?

The flag

"He made a spring and a clutch at the pole. At the same instant his friend grabbed it from the other side. They jerked at it, stout and furious, but the color sergeant was dead, and the corpse would not relinquish its trust. For a moment there was a grim encounter. The dead man, swinging with bended back, seemed to be obstinately tugging, in ludicrous and awful ways, for the possession of the flag.

It was past in an instant of time. They wrenched the flag furiously from the dead man, and, as they turned again, the corpse swayed forward with bowed head. One arm swung high, and the curved hand fell with heavy protest on the friend's unheeding shoulder."