Thread: An injured Luftwaffe Oberleutnant, a Fliegerleitoffizier (Flyer Control Officer), in his Sd.Kfz 251 Funkwagen observing and directing attack aircraft towards Soviet positions, Russia, 1943.

Cooperation between the Army and the Luftwaffe in combat was orchestrated by Fliegerverbindungsoffiziere, or 'Flivos'. If an army unit required direct Luftwaffe support, their divisional staff were to apply to the Army Group for a Flivo to be supplied...

Flivo (Ln) [signals] were attached to Armeekorps staff and, in some cases, Divisional staff. Flivo (Aufklärung) orchestrated the cooperation between the Army and LW recon units.

Note the double barrelled 'L' flare pistol being readied. Flares were crucial during WH operations.

The officer on these images, however, is a Fliegerleitoffizier, who would deploy themselves and their men onto the frontline to coordinate Luftwaffe aircraft. This Sd.Kfz 251 is accompanied by several Pz.Kpfw IV Ausf. Hs (or Gs).

I hope this has offered a brief introduction to the organs which allowed Heer and Luftwaffe forces to cooperate during operations.
These photographs were taken by PK Etzhold in October 1943.
Revision: the halftrack is an Sd.Kfz. 251/6 and was the Flieger-Leit-Fahrzeug.