I found these videos on YouTube and thought I would share. A lot of us are familiar with the M1 and it's iconic status but what's great about these videos are the interviews with the vets.
https://www.youtube.com/watch?v=SFPqDYEFSNQ
https://www.youtube.com/watch?v=AeWd5n54208
https://www.youtube.com/watch?v=SFPqDYEFSNQ
https://www.youtube.com/watch?v=AeWd5n54208