Army plays Notre Dame in Yankee Stadium

The video covers a football game at Yankee Stadium between Notre Dame and Army. It starts with a kickoff, followed by a fumble and recovery by the local team. A touchdown is scored by plunging through the center. Wilson makes several passes, and Army maintains ball possession. The game concludes with a final run and breakaway within the 35-yard line.

How did the play end with Wallace snapping the ball?

What does it mean when it says 'he breaks away within the 35 or 30'?