Repairing an old split rail fence | DIY

I have this old cedar split rail fence around the front of my property. If it is as old as the original house and barn, it is probably close to 80 years old. All the rails were split and cut by hand, and have a lot of tool marks. It had fallen down in a lot of places, and I hadn't fixed it because I was planning to just replace it. But we decided to put that on hold until next year, so I wanted to fence to look nice again, and thought I would straighten it up a bit.