That would depend on the severity of their wounds. Sometimes they were granted leave to go home to recuperate with the expectation that they would return. On the other hand, if a surgeon certified that they were unfit for duty, then they would have been discharged. Due to problems with communication then, and with incomplete records now, it can be hard, if not impossible, to figure out exactly what happened to an individual soldier. Men sent home to recuperate may not have done so sufficiently to return before their leave was up. Many of these were then listed as absent without leave. Some of these eventually did return. Others never did. All we can go by are the stories told by the records available, but these rarely tell the whole story. Family letters or contemporaneously written journals can add detail to these stories; but we quite often find that family stories passed down through the generations change the actual facts quite a bit.