Free French Douglas Mk IIIA Bostons attacking targets in occupied Europe at low level in late 1943

No. 342 Squadron also known in French as ''Groupe de Bombardement n° 1/20 "Lorraine", was a Free French squadron in the RAF during World War II.

No. 342 Squadron was formed on 7 April 1943 at RAF West Raynham with personnel from the Free French Air Forces (Forces aériennes françaises libres) transferred from the Middle East, in particular the personnel of the French escadrilles "Metz" and "Nancy". The squadron was part of No. 2 Group RAF of RAF Bomber Command and equipped with Douglas Mk IIIA Bostons (aka Douglas A-20C Havocs). They later moved with their sister squadron No. 88 Squadron to RAF Hartford Bridge.

The squadron flew low-level bombing and strafing missions (nicknamed "hedgehopping"), over France and the Netherlands, in particular against V-1 bases in Northern France and selected sites connected with the preparation for the Allied invasion.