Kuala Lampur, April 22 -- While Ukrainian combat medic Anastasia Podobailo cleaned blood from a wounded soldier's arm and called him "little bun", her colleague and husband Mykola Yasinenko checked the patient's intravenous drip was flowing.

The couple navigated their small surgery together and treated the groaning serviceman, following a closely choreographed routine perfected over years of working shoulder-to-shoulder throughout Russia's invasion.

"We know our strengths, and, well, our not-so-perfect sides," 27-year-old Podobailo told AFP at their military field hospital in the eastern Donetsk region.

"We've worked together for so long, we hardly need to communicate - except by looking at each other," added Yasinenko, 31.

The effort...