1966 15 May
On 15 May 1966 the 34th TFS was organized at Korat RTAFB, assigned to the 41st Air Division (located at Yokota AB, Japan) but attached for all practical purposes to the resident 388th Tactical Fighter Wing. All equipment, including F-105s, and all personnel came from resources of the 41st Air Division, especially the 36th TFS.
1966 1 July
The squadron soon entered into combat in Southeast Asia and by 1 July 1966 it was fully manned and equipped. By February 1967 several of the 34th pilots had completed 100 combat missions over North Vietnam.
1968 15 January
Pacific Air Forces transferred the 34th on 15 January 1968 to the 347th TFW (at Yokota AB, Japan), but it remained attached to the 388th TFW. Like all other Thunderchief combat squadrons, the 34th flew its share of tough strike missions to North Vietnam.
1968 31 March
After 31 March 1968, the authorities restricted air operations to the lower panhandle of North Vietnam (below the 19th parallel).
1968 1 November
Then, on 1 November 1968, the bombing campaign to North Vietnam was halted entirely and combat missions shifted to intensive operations against the enemy in South Vietnam.
1969 9 May
On 9 May 1969, the 34th flew its last F-105 mission then stood down to receive F-4E Phantoms.
The squadron remained at Korat until December 1975 when it deployed to Hill AFB, Utah. Leading the squadron was Jack Phillips, who completed his F-105 missions in 1967 as a 34th member.
2010 16 July
The 34th Fighter Squadron flew F-16C Fighting Falcons out of Hill AFB, Utah, until recently and was assigned to the 388th Fighter Wing. The 34th was deactivated on 16 July 2010 due to military restructuring. Wikipedia has a more detailed history.
2015 17 July
The 34th Fighter Squadron was reactivated on July 17, 2015, at Hill Air Force Base, Utah. The 34th is the first combat squadron to fly the Air Force’s newest fighter aircraft, the F-35A.