From Battlefield to Pharma: An Army Officer's Mission Journey at GSK

On the surface, the pharmaceutical industry and a military career might seem to have little in common. But for Court Horncastle, Senior Vice President and Business Unit Head of GSK's U.S. Anti-infectives and Respiratory Business, both roles have been driven by a clear sense of purpose, and he conveys that mission to the teams he leads.

Of course, transitioning from one role to another inevitably involves culture shock. Horncastle's first job in the pharmaceutical industry was as a sales representative for GSK in New Orleans, a world away from the military life he had left behind.

"I retired from my position as the deputy commander of an Army rapid-deployment tank company, where I had led soldiers on successful combat missions. Now, as a sales representative, I often found myself sitting in waiting rooms, hoping someone would give me a minute of their time to listen," Horncastle recalled. "It was a stark contrast." And that was an understatement.

Another world

Saudi Arabia's Empty Quarter is a harsh desert—a vast sea of sand stretching 250,000 square miles across the Arabian Peninsula, with nothing but rolling dunes and gravel plains. During the Gulf War in 1990, when GPS devices were almost nonexistent, Horncastle, then an armored officer commanding a tank platoon, had to rely on maps and a compass to navigate this unforgiving terrain.

"We navigated as if we were at sea, because the desert is more like an ocean than any other place," he said.

While leading soldiers on ground combat reconnaissance missions, he often encountered Bedouins—nomadic Arab tribes moving with herds of camels, sheep, and goats from one oasis to another across the desert.

"I led a platoon of 30 cavalry scouts," he said. "Our mission was to move forward and maintain contact with the enemy."

On one occasion, while reconnoitering ahead of friendly lines, Horncastle encountered two displaced Kuwaitis at a desert crossroads—a father and son. The boy, who spoke English, approached Horncastle with a question.

"He asked me: 'Will you help get my school back?'" Horncastle recalled. "At the time, I was focused on driving out the Iraqi forces, but looking back now, that was clearly one of the most important moments of my life, about doing something meaningful."

A new mission

After leaving the military, he struggled to find that sense of purpose again.

"That energy, adrenaline, and sense of purpose, I think, is hard to find in the civilian world," he said. "I never felt as energized and purposeful as I did when leading soldiers in combat."

When that chapter of his life was over, Horncastle interviewed for several sales positions but always felt something was off. He needed something more.

"I felt I could do it and would succeed, but it didn't feel important," he said. "I vaguely knew I needed to find a career with purpose, one that would still allow me to do something noble, something important, and to uphold certain ideals."

He found that focus and sense of purpose at GSK.

"This matters," he realized. "This is about helping sick people."

Horncastle spent five years as a sales representative in downtown New Orleans, visiting areas many other representatives were unwilling to go. The city's dangerous reputation did not scare him off. Instead, he saw a place where he could make a difference and stand up for people.

"Getting back into infectious diseases, especially in the era of antimicrobial resistance, focusing on antibiotics, is truly exciting."

"I went everywhere," he said. "I realized that even the toughest areas have doctors, nurses, and pharmacists. They are there every day, working hard to help people who don't have access to the healthcare that most Americans enjoy."

Now, with more than 30 years at GSK, Horncastle remains passionate about his work, leading a team of over 1,000 people who all have the opportunity to "prevent disease together." He is especially focused on helping GSK return to the antibiotics and antifungals market.

"Getting back into infectious diseases, especially in the era of antimicrobial resistance, focusing on antibiotics, is truly exciting," he said. In fact,the company says, infectious diseases account for about two-thirds of GSK's R&D pipeline.

He cited gepotidacin as an example, which, if approved, would be thefirst new oral antibiotic in over 20 yearsfor the treatment of uncomplicated urinary tract infections. In clinical trials, ithas been shownto be particularly effective in patients at risk of treatment failure due to resistance or recurrence, outperforming existing first-line therapies.

"Unfortunately, about 25% to 30% of women suffer from recurrent or persistent uncomplicated UTIs, or are at risk of consecutive infections. Through market research, we know these women go through round after round of antibiotics, but the problem isn't resolved," he said. "They truly need new alternatives."

The company said in April that it plans to submit a marketing application for gepotidacin to the FDA in the second quarter.

Leadership insights

Although Horncastle left the military decades ago, he still applies that sense of purpose to his work and leadership at GSK—from understanding and executing the company's mission, to identifying risks, prioritizing accountability, and aligning strategy with tactics.

"As a leader, my job is to make the team understand that whether they are in medical, finance, legal, HR, sales, or marketing, we all have one unified and paramount goal," he said.

He communicates this by "declaring what matters most and explaining why it matters," then letting each team decide how to achieve the goal.

For example, his team might set a strategic goal for its respiratory medicines that treat adult asthma or COPD, aiming to help a certain number of patients by the end of 2024.

"If you work in the medical division, you should be able to say: 'To achieve this goal, we need to generate this type of evidence so the drug can be recognized as suitable for a broader patient population,'" Horncastle said. "If I work in market access, that means I need to develop strategies to make respiratory products widely available under commercial insurance and Medicare Part D, rather than limiting access to a smaller patient group."

In the military, communicating intent, developing tactics, and executing strategy were matters of life and death: plans either "worked" or "didn't work," with no gray areas.

While decisions in the pharmaceutical field are far less urgent, the two are not as different as one might imagine. Horncastle still knows that he and his team bear responsibility for patients' well-being. In fact, it's something he thinks about "all the time."

"I feel I'm doing important and meaningful work, with the potential to help someone's mother, sister, cousin, friend, or neighbor, and that's why I've never lacked the motivation to do it."