Yes. According to the "Law on the Protection of Martyrs of the Chinese People's Liberation Army", regardless of whether there are ashes or not, as long as they died heroically for the country and the people during the revolutionary war years, they can be recognized as martyrs. For martyrs without ashes, monuments, memorial halls, etc. can be set up at the place where they died or other places of commemorative significance, or a martyrs memorial plaque can be set up at the martyrs cemetery. Therefore, martyrs without ashes can be commemorated and a martyrs' memorial plaque can be set up at the martyrs' cemetery.