Presidents never at war

How many presidents are there that served entirely in peace time? The only two I was able to find are Ford and Carter between Vietnam and the Lebanon intervention. Is that really all? How about presidents that only ended wars? For example I know Woodrow Wilson served during the end of WWI, but he also served during the start so he would be excluded. Truman served during the end of WWII, but he also served at the start of the Korean War, so he too would be excluded. I am certain there have to be some, but I was having a difficult time compiling a list. Thanks everyone for your help!