He served in Norrbotten Regiment ( I 19 ) in 1958 .
Kjellgren was head of department at the Army Staff from 1952 to 1958 and was promoted to lieutenant colonel in 1957 .
Kjellgren served in Norrbotten Regiment ( I 19 ) in 1958 .
Kjellgren was head of department at the Army Staff from 1952 to 1958 and was promoted to lieutenant colonel in 1957 .