Hello
That image is false, I don't mean that it's a retouched image but that it's impossible.
If you look at the special ability of the Roman Prefect, if a unit protected by him dies, he gives it back to us for free in the infirmary for another unit, as can be seen in the following image.
It is a bug (visual or that you have lost the units), see if the units are still in your acropolis that would be the visual bug and if they are not only you need to give us the data from your server and if you play on .com or facebook to start looking at it.
Hola
Esa imagen es falsa, no quiero decir que sea una imagen retocada sino que es imposible.
Si te fijas en la abilidad especial del Prefecto Romano si muere una unidad protegida por el nos la devuelve gratis en la enfermeria por otra unidad como se ve en la siguiente imagen.
Es un bug ( visual o que has perdido las unidades ), mira si las unidades siguen en tu acropolis que seria el bug visual y si no estan solamente te falta darnos los datos de tu servidor y si juegas en .com o facebook para comenzar a mirarlo
This Position is Offense and the legendary unit is Roman Enforcer which is Defense so no Defense units dies no free infirmary units.
Lately a lot of times when sent unit to positions the app sent champions or legendary units random, I always double check what units finally app choose to send with my selection before hit the sent button but a few times the app manages to send champions or legendary units with my selection.