Damaged wood

[donki1967]

Ok sir, the goal is to leave it as much as possible in its original state, after repair of course.
French Military armorer in the far past have learned to make repairs with patches on the woods.It was a regulatory procedure ordered in the arsenals;was it the same in the US? I have never seen or heard about such an use.
If anyone can talk about it, or better if he can show pictures of these repairs on American military weapons it would be interesting!