 Finally, the 1st Army Group consisted of the 4th Army, with three infantry divisions and one detachment, whilst the 7th Army had two infantry divisions, one cavalry division, three mountain detachments, two infantry detachments and nine frontier defence regiments.The Strategic, "Supreme Command" Reserve in Bosnia comprised four infantry divisions, four independent infantry regiments, one tank battalion, two motorized engineer battalions, two motorized heavy artillery regiments, fifteen independent artillery battalions and two independent anti-aircraft artillery battalions.The Coastal Defence Force, on the Adriatic opposite Zadar comprised one infantry division and two detachments, in addition to fortress brigades and anti-aircraft units at Šibenik and Kotor.