Lineage. Constituted as 346 Bombardment Squadron (Heavy) on 28 Jan 1942. Activated on 1 Jun 1942. Redesignated as 346 Bombardment Squadron, Heavy on 29 Sep 1944. Inactivated on 8 Nov 1945. Redesignated as 346 Bombardment Squadron, Very Heavy on 13 May 1947. Activated in the Reserve on 29 May 1947. Inactivated on 27 Jun 1949. Redesignated as 346 Strategic Reconnaissance Squadron, Heavy, and activated, on 1 Jan 1953. Redesignated as 346 Bombardment Squadron, Heavy on 1 Oct 1955. Inactivated on 31 Mar 1974. Redesignated as 346 Test and Evaluation Squadron on 1 Jun 1993. Activated on 15 Jun 1993. Inactivated on 21 Sep 1995. Redesignated as 346 Test Squadron on 17 Jul 2000. Activated on 1 Aug 2000.
Assignments. 99 Bombardment Group, 1 Jun 1942-8 Nov 1945. 99 Bombardment Group, 29 May 1947-27 Jun 1949. 99 Strategic Reconnaissance (later, 99 Bombardment) Wing, 1 Jan 1953-31 Mar 1974. 99 Test Group, 15 Jun 1993-21 Sep 1995. 318 Information Operations (later, 318 Cyberspace Operations) Group, 1 Aug 2000-.
Stations. Orlando AB, FL, 1 Jun 1942; MacDill Field, FL, 1 Jun 1942; Pendleton Field, OR, 29 Jun 1942; Gowen Field, ID, 28 Aug 1942; Walla Walla, WA, 25 Sep 1942; Sioux City AAB, IA, 18 Nov 1942-3 Jan 1943; Navarin, Algeria, 16 Mar 1943; Oudna, Tunisia, 5 Aug 1943; Tortorella Airfield, Italy, c. 13 Dec 1943; Marcianise, Italy, c. 27 Oct-8 Nov 1945. Birmingham Muni Aprt, AL, 29 May 1947-27 Jun 1949. Fairchild AFB, WA, 1 Jan 1953 (deployed at Andersen AFB, Guam, 29 Jan-28 Apr 1956); Westover AFB, MA, 4 Sep 1956-31 Mar 1974. Ellsworth AFB, SD, 15 Jun 1993-21 Sep 1995. Kelly AFB (later, Kelly Fld Annex, Lackland AFB; Joint Base San Antonio-Lackland), TX, 1 Aug 2000-.
Service Streamers. None.
Campaign Streamers. World War II: Air Offensive Europe; Tunisia; Sicily; Naples-Foggia; Anzio; Rome-Arno; Normandy; Northern France; Southern France; North Apennines; Rhineland; Central Europe; Po Valley; Air Combat, EAME Theater.
Armed Forces Expeditionary Streamers. None.
Decorations. Distinguished Unit Citations: Sicily, 5 Jul 1943; Austria, 23 Apr 1944. Air Force Outstanding Unit Award with Combat "V" Device: 2-21 Mar and 15-31 Mar 1970. Air Force Outstanding Unit Awards: 1 Oct 1967-1 Mar 1968; 2 Mar-1 Apr 1968; 1 Jul 1971-30 Jun 1972; 1 Jun 2008-31 May 2009; 18 Aug 2009-1 Oct 2010; 2 Oct 2010-30 Sep 2011; 1 Oct 2013-30 Sep 2014. Air Force Organizational Excellence Award: 1 Jun 2003-31 May 2004. Republic of Vietnam Gallantry Cross with Palm: 2 Mar 1969-31 Mar 1970.
Lineage, Assignments, Stations, and Honors through 14 May 2015.
Supersedes statement prepared on 20 Mar 2001
Emblem. Approved on 7 Nov 2000.
Prepared by John M. Lacomia.
Approved by Carl E. Bailey.