1. to leave, to go away, to depart
He decided to march away from the city.
Ele decidiu marchar-se da cidade.
2. to walk away, to leave on foot
The soldiers marched away at dawn.
Os soldados marcharam-se ao amanhecer.
3. to stop working, to break down (of machines)
The engine marched away and stopped working.
O motor marchou-se e parou de funcionar.