The production, which will combine most of Henry IV, Part I with a scene from Henry IV, Part II, is something new for the company, which for eight summers has stuck mainly to Shakespeare's comedies. A 100-person battle in Clark Park is a departure for the group, and for the play itself - a typical Henry IV production portrays the battle in heavily stylized fashion, with just a few actors.
SCP organizers envisioned something grander - and something that involved more community members - and received a grant from the Knight Arts Challenge last year to do just that.
"[ Henry IV] centers around the idea that we're all wrestling with greatness," director Alex Torra said. "And in the battle, you can see everyday people being part of a grand movement, participating in a moment of national scale."
At Sunday's audition, Camp taught auditioners to stand in formation and to charge without incurring bodily harm (the key, he said, is to keep your elbows to yourself).
"Have any of you been in a marching band?" A few hands went up. "You'll be perfect," he said.
Some in the room had acting experience; others had never set foot on stage. All took easily to the soldiering life, yelling fearsomely on cue and sprinting across the room, arms raised, for about two hours.
"I thought they would ask us to shout and go on our way," said Cliff Schwinger, a 59-year-old structural engineer from Cheltenham. "It was completely different from what I expected. This is going to be so much fun."
There were no weapons and no costumes - those will come later - and everyone made the cut. Organizers hope for an army of 100 to 150 for the final production.
"100 people amplifying one moment - it's totally beautiful," Camp said.
The company will hold one more audition next month before rehearsals begin. In the meantime, Sunday's recruits said they looked forward to returning to the battlefield.
"It's Shakespeare," said Bryant Gaillard, a land surveyor from West Philadelphia. "How could you turn that down?"