They spend their time treating the sick and injured in cities and towns. Now these doctors and nurses are on the frontlines of Australia's biggest military exercise.
Between July 13 and August 4, Adelaide-based reservists from 3rd Health Battalion will pull on their uniform for Exercise Talisman Sabre 2025.
It's the first time the unit has fielded an all-reservist treatment team to run a Role 1 hospital, a facility out in the battlefield where patients receive life-saving care.
In the Northern Territory's Bradshaw Field Training Area, military muscle is side-by-side with medical might.
The battalion's treatment team are some of the best South Australia has to offer.
The senior clinician of the team is medical officer Major Aloysius Achusiogu, a Nigerian-born humanitarian who splits his time between urban and rural healthcare.
When he's not working at his East Glenelg clinic, the rural generalist tours outback Queensland.
Service is a guiding value for the doctor, who also runs an NGO helping vulnerable Nigerians in Africa.
"The impact you have on other people is what you're remembered for," Major Achusiogu said.
Across the table is nursing officer Lieutenant Martina Sydenham.
Dealing with life and death situations are all in a day's work for the reservist of eight years.
The nursing officer works in the Royal Adelaide Hospital emergency department, one of largest trauma centres in Australia.
It turns out the Adelaide medical community is tight-knit.
"A lot of us know each other on civvy street," Lieutenant Sydenham said.
"We have intensive-care paramedics on the treatment team who I see all the time at my day job.
"We often get really senior people that come into these reserve roles and have a lot of experience, which is really helpful," she said.
For Lieutenant Sydenham, opportunities to see the road less travelled motivated her to join Army.
Others found they could offer more as reservists (SERCAT 5).
Corporal Scott Wakefield transitioned from full time service to pursue a career as a South Australian ambulance paramedic after ten years as a medical technician.
He said a career in the reserves was more rewarding than discharging from service.
"I still enjoyed the role and the mateship of Army, and felt I could give something back to the junior medics coming through the ranks," Corporal Wakefield said.
"As a reservist, you get to keep the mates, you keep the skills, and you get to do some cool stuff too," he said.
Half of 3 HB personnel are reservists from South Australia, Victoria and Tasmania.
On Talisman Sabre 2025, 3 Platoon Treatment Team provides point-of-injury health care for combat casualties, medic support during evacuation and medical officer-led resuscitation at the Bradshaw Camp.
