On the morning of 6 April, Luftwaffe (German Air Force) aircraft conducted surprise attacks on Yugoslav airfields in the 7th Army area, including Ljubljana. At 07:00, Messerschmitt Bf 109E fighters of Jagdgeschwader 27 strafed Ljubljana airfield, attacking hangars and some Potez 25 biplanes. This was followed by attacks by the Regia Aeronautica (Italian Air Force) on Yugoslav troop concentrations of the 7th Army. German and Italian air attacks interfered with the deployment of troops and command was hampered by reliance on civilian telegraph and telephone services. The front along the border with Italy was relatively quiet, with some patrol clashes occurring, some sporadic artillery bombardments of border fortifications, and an unsuccessful raid by the Italians directed at Mount Blegoš. On 7 April, along the Italian border there were only skirmishes caused by Italian reconnaissance-in-force to a depth of . By the end of the day, morale in the 7th Army had started to decline due to fifth column elements encouraging soldiers to stop resisting the enemy.