1st panzer division was assigned with the heaviest available artillery for the main assault the following day, whereas 2nd and 10th would receive only light artillery support. the units assigned to 1st panzer division included artillery regiment 73, artillery regiment 49, three artillery battalions from the corps reserves as well as the 3rd [heavy] battalion of artillery regiment 74 and the 3rd [heavy] battalion of artillery regiment 90. the lighter battalions of artillery regiments 74 and 90 were to remain with 2nd and 10th panzer divisions respectively. in the evening of 12 may, yet another "korpsbefehl" was given out, informing the officers that luftwaffe capacities had been freed up over belgian airspace and would be used to support panzer group kleist in the hugely important meuse crossing the following day, 13 may 1940.