According to Congressman C. L. "Butch" Otter's Website: he "served honorably in the Idaho Army National Guard's 116th Armored Cavalry from 1968 to 1973". Boy, would I like to see his service records. 1968 to 1973 is, of course, a prime period to be in the Guard to avoid Vietnam.
Botch was born May 1942, and graduated from college in 1967, at the age of 25. If he took the usual 4 years, he turned 18 in 1960 but didn't start college until 3 years later, in 1963.
I'm not really sure about his stand on the war, but if he's a big supporter then he's ripe for the Chicken Hawk or Yellow Elephant label.