Luftwaffe priorities shifted repeatedly during the campaign, generally in response to developments on the ground. By 14 May, the battle around Sedan had become the focal point of German air operations. The breakthrough across the Meuse was now regarded as the decisive operation of the western campaign, and consequently the overwhelming majority of the Luftwaffe's tactical air assets were concentrated on that sector.
At the same time, the German High Command had concluded on the evening of 13 May that a rapid decision was required in the Netherlands. The army formations engaged there were urgently needed as operational reserves for the wider campaign in Belgium and northern France. The Luftwaffe likewise sought to reduce the breadth of the active front. Having already suffered losses of approximately 1,000 aircraft since the beginning of the offensive, German air power was being stretched across an ever-expanding theatre of operations.
To bring the Dutch campaign to a swift conclusion, Kampfgeschwader 30, equipped with Ju 88 twin-engine dive bombers, and Kampfgeschwader 54, flying Heinkel He 111s, were specifically assigned to operations in the Netherlands on 14 May. KG 54 was withdrawn from the central Belgian front and reinforced with replacement aircraft in preparation for a decisive air offensive against Rotterdam and, if necessary, other Dutch cities.
These measures were a direct consequence of Hitler's Weisung (Directive) No. 11. Drafted on 13 May and formally issued during the early hours of 14 May, the directive called for the rapid conclusion of operations in the Netherlands. The German leadership wished to eliminate the remaining Dutch resistance as quickly as possible in order to free both ground and air forces for employment in the main theatre of operations further south.
As a result, while the strategic centre of gravity had shifted to the Meuse and Sedan, the Netherlands briefly regained prominence as the target of a concentrated effort designed to secure a final and decisive outcome. The dramatic events that followed in Rotterdam were a direct reflection of that objective.
Luftwaffe activity over Zeeland was relatively limited on this fifth day of the campaign. German air power was now being concentrated where it was considered most decisive: over the battlefields of Belgium, northern France, and, within the Netherlands, the Rotterdam area. Zeeland no longer occupied a prominent place in German operational planning, although the province still saw reconnaissance flights and aircraft transiting to and from the Rotterdam and Antwerp sectors.
One such aircraft, a Junkers Ju 88 A-1 of 1.(F)/121 - a long-range reconnaissance unit - was shot down at approximately 0600 hours and crashed near Aardenburg in Zeeuws-Vlaanderen. Contemporary reports are contradictory, with some sources identifying the aircraft as a Heinkel He 111. Both twin-engine types were operated by the unit during this period, making definitive identification difficult. The aircraft was reportedly engaged by either a British or French fighter, and the entire crew perished in the crash.
At around 1400 hours, a Heinkel He 111P belonging to the headquarters flight of Kampfgeschwader 54 was shot down by French fighters and crashed near Yerseke. This aircraft had participated in the major bombing operation against Rotterdam roughly thirty minutes earlier, in which the entire bomber force of KG 54 took part. As is well known, a limited portion of the German bomber formation may not have released its bombs over Rotterdam after receiving the red flare signals intended to halt the attack. Estimates suggest that as many as twenty-seven (of 100) bombers may have remained fully armed after being waved off. These aircraft were subsequently redirected to alternative targets, among them French troop concentrations in Zeeland. The Heinkel that crashed near Yerseke may well have belonged to this diverted element of the formation.
Another loss occurred near Aardenburg around midday, when a British Bristol Blenheim Mk IV of No. 15 Squadron, flown by Pilot Officer D.S.R. Harriman, crashed in Zeeuws-Vlaanderen. It is possible that this aircraft was involved in the same engagement that resulted in the destruction of the German reconnaissance aircraft earlier that morning.
The available timelines are not entirely consistent, and wartime records often prove less precise than later researchers would wish, also due to applied time differences. Nevertheless, the fact that both aircraft came down in virtually the same area on the same day, combined with reports of aerial combat in the vicinity, strongly suggests that the two losses may have been connected. While absolute certainty remains elusive, the circumstantial evidence is compelling.
Although air operations over Zeeland were far less intense than those over Rotterdam, Antwerp, or the Meuse front, these incidents demonstrate that the province remained part of the wider aerial battlefield. Even on a day when German attention was focused elsewhere, the skies above Zeeland continued to witness the hazards and uncertainties of the air war.